47091656 has 8 divisors (see below), whose sum is σ = 88296870. Its totient is φ = 23545824.

The previous prime is 47091631. The next prime is 47091659. The reversal of 47091656 is 65619074.

It can be written as a sum of positive squares in only one way, i.e., 32878756 + 14212900 = 5734^2 + 3770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (47091659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2943221 + ... + 2943236.

Almost surely, 2^47091656 is an apocalyptic number.

It is an amenable number.

47091656 is a deficient number, since it is larger than the sum of its proper divisors (41205214).

47091656 is a wasteful number, since it uses less digits than its factorization.

47091656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886463 (or 5886459 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 47091656 is about 6862.3360454003. The cubic root of 47091656 is about 361.1170447379.

The spelling of 47091656 in words is "forty-seven million, ninety-one thousand, six hundred fifty-six".