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47481089 = 229207341
BaseRepresentation
bin1011010100100…
…0000100000001
310022100021210212
42311020010001
544123343324
64413403505
71114403555
oct265100401
9108307725
1047481089
1124890277
1213a99595
139ab5a26
14643d865
15427d70e
hex2d48101

47481089 has 4 divisors (see below), whose sum is σ = 47688660. Its totient is φ = 47273520.

The previous prime is 47481079. The next prime is 47481103. The reversal of 47481089 is 98018474.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98018474 = 249009237.

It can be written as a sum of positive squares in 2 ways, for example, as 45427600 + 2053489 = 6740^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 47481089 - 212 = 47476993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47481029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103442 + ... + 103899.

It is an arithmetic number, because the mean of its divisors is an integer number (11922165).

Almost surely, 247481089 is an apocalyptic number.

It is an amenable number.

47481089 is a deficient number, since it is larger than the sum of its proper divisors (207571).

47481089 is a wasteful number, since it uses less digits than its factorization.

47481089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207570.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 47481089 is about 6890.6522913292. The cubic root of 47481089 is about 362.1097542727.

The spelling of 47481089 in words is "forty-seven million, four hundred eighty-one thousand, eighty-nine".

Divisors: 1 229 207341 47481089