45997904 has 20 divisors (see below), whose sum is σ = 90583860. Its totient is φ = 22621440.

The previous prime is 45997901. The next prime is 45997933. The reversal of 45997904 is 40979954.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 45535504 = 680^2 + 6748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45997901) 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, 22589 + ... + 24540.

It is an arithmetic number, because the mean of its divisors is an integer number (4529193).

Almost surely, 2^45997904 is an apocalyptic number.

It is an amenable number.

45997904 is a deficient number, since it is larger than the sum of its proper divisors (44585956).

45997904 is a wasteful number, since it uses less digits than its factorization.

45997904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47198 (or 47192 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 45997904 is about 6782.1754621950. The cubic root of 45997904 is about 358.2993449404.

The spelling of 45997904 in words is "forty-five million, nine hundred ninety-seven thousand, nine hundred four".