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47040253 = 135097109
BaseRepresentation
bin1011001101110…
…0011011111101
310021111220002121
42303130123331
544020242003
64400122541
71110556411
oct263343375
9107456077
1047040253
112460a047
1213906451
139990190
146366d41
1541e2cbd
hex2cdc6fd

47040253 has 8 divisors (see below), whose sum is σ = 50765400. Its totient is φ = 43330368.

The previous prime is 47040239. The next prime is 47040281. The reversal of 47040253 is 35204074.

It can be written as a sum of positive squares in 4 ways, for example, as 1315609 + 45724644 = 1147^2 + 6762^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47040253 - 225 = 13485821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47040223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063 + ... + 10171.

It is an arithmetic number, because the mean of its divisors is an integer number (6345675).

Almost surely, 247040253 is an apocalyptic number.

It is an amenable number.

47040253 is a deficient number, since it is larger than the sum of its proper divisors (3725147).

47040253 is a wasteful number, since it uses less digits than its factorization.

47040253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 47040253 is about 6858.5897238427. The cubic root of 47040253 is about 360.9856042018.

The spelling of 47040253 in words is "forty-seven million, forty thousand, two hundred fifty-three".

Divisors: 1 13 509 6617 7109 92417 3618481 47040253