53905645 has 16 divisors (see below), whose sum is σ = 66096000. Its totient is φ = 42192448.

The previous prime is 53905627. The next prime is 53905669. The reversal of 53905645 is 54650935.

It is a cyclic number.

It is not a de Polignac number, because 53905645 - 2⁵ = 53905613 is a prime.

It is a super-3 number, since 3×53905645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105651 + ... + 106159.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 2^53905645 is an apocalyptic number.

It is an amenable number.

53905645 is a deficient number, since it is larger than the sum of its proper divisors (12190355).

53905645 is a wasteful number, since it uses less digits than its factorization.

53905645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 53905645 is about 7342.0463768625. The cubic root of 53905645 is about 377.7560387497.

The spelling of 53905645 in words is "fifty-three million, nine hundred five thousand, six hundred forty-five".