45531656 has 8 divisors (see below), whose sum is σ = 85371870. Its totient is φ = 22765824.

The previous prime is 45531649. The next prime is 45531667. The reversal of 45531656 is 65613554.

It can be written as a sum of positive squares in only one way, i.e., 45346756 + 184900 = 6734^2 + 430^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2845721 + ... + 2845736.

Almost surely, 2^45531656 is an apocalyptic number.

It is an amenable number.

45531656 is a deficient number, since it is larger than the sum of its proper divisors (39840214).

45531656 is a wasteful number, since it uses less digits than its factorization.

45531656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691463 (or 5691459 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 45531656 is about 6747.7148724587. The cubic root of 45531656 is about 357.0846229470.

The spelling of 45531656 in words is "forty-five million, five hundred thirty-one thousand, six hundred fifty-six".