45391656 has 16 divisors (see below), whose sum is σ = 113479200. Its totient is φ = 15130544.

The previous prime is 45391609. The next prime is 45391663. The reversal of 45391656 is 65619354.

45391656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945636 + ... + 945683.

It is an arithmetic number, because the mean of its divisors is an integer number (7092450).

Almost surely, 2^45391656 is an apocalyptic number.

It is an amenable number.

45391656 is an abundant number, since it is smaller than the sum of its proper divisors (68087544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45391656 is a wasteful number, since it uses less digits than its factorization.

45391656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891328 (or 1891324 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The square root of 45391656 is about 6737.3330034963. Note that the first 3 decimals coincide. The cubic root of 45391656 is about 356.7182611864.

The spelling of 45391656 in words is "forty-five million, three hundred ninety-one thousand, six hundred fifty-six".