53404645 has 16 divisors (see below), whose sum is σ = 73359360. Its totient is φ = 36561024.

The previous prime is 53404627. The next prime is 53404657. The reversal of 53404645 is 54640435.

It is a cyclic number.

It is not a de Polignac number, because 53404645 - 2⁵ = 53404613 is a prime.

It is a super-2 number, since 2×53404645² = 5704112215152050, which contains 22 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, 41116 + ... + 42394.

It is an arithmetic number, because the mean of its divisors is an integer number (4584960).

Almost surely, 2^53404645 is an apocalyptic number.

It is an amenable number.

53404645 is a deficient number, since it is larger than the sum of its proper divisors (19954715).

53404645 is a wasteful number, since it uses less digits than its factorization.

53404645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 53404645 is about 7307.8481784996. The cubic root of 53404645 is about 376.5821039535.

The spelling of 53404645 in words is "fifty-three million, four hundred four thousand, six hundred forty-five".