47561913 has 48 divisors (see below), whose sum is σ = 81617536. Its totient is φ = 26127360.

The previous prime is 47561897. The next prime is 47561929. The reversal of 47561913 is 31916574.

47561913 is a `hidden beast` number, since 4 + 7 + 561 + 91 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (47561897) and next prime (47561929).

It is not a de Polignac number, because 47561913 - 2⁴ = 47561897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47561113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262683 + ... + 262863.

Almost surely, 2^47561913 is an apocalyptic number.

47561913 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

47561913 is a deficient number, since it is larger than the sum of its proper divisors (34055623).

47561913 is a wasteful number, since it uses less digits than its factorization.

47561913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 331 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 47561913 is about 6896.5145544688. The cubic root of 47561913 is about 362.3151031709.

The spelling of 47561913 in words is "forty-seven million, five hundred sixty-one thousand, nine hundred thirteen".