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47255013 = 3213403889
BaseRepresentation
bin1011010001000…
…0110111100101
310021220210200200
42310100313211
544044130023
64404501113
71112442501
oct264206745
9107823620
1047255013
1124746433
12139aa799
139a36b60
1463c1301
154236743
hex2d10de5

47255013 has 12 divisors (see below), whose sum is σ = 73507980. Its totient is φ = 29079936.

The previous prime is 47255003. The next prime is 47255023. The reversal of 47255013 is 31055274.

It is a happy number.

47255013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47255003) and next prime (47255023).

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 28227969 = 4362^2 + 5313^2 .

It is not a de Polignac number, because 47255013 - 210 = 47253989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47255003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201828 + ... + 202061.

It is an arithmetic number, because the mean of its divisors is an integer number (6125665).

Almost surely, 247255013 is an apocalyptic number.

It is an amenable number.

47255013 is a deficient number, since it is larger than the sum of its proper divisors (26252967).

47255013 is a wasteful number, since it uses less digits than its factorization.

47255013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403908 (or 403905 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 47255013 is about 6874.2281748572. The cubic root of 47255013 is about 361.5341244050.

The spelling of 47255013 in words is "forty-seven million, two hundred fifty-five thousand, thirteen".

Divisors: 1 3 9 13 39 117 403889 1211667 3635001 5250557 15751671 47255013