53442864 has 30 divisors (see below), whose sum is σ = 149566196. Its totient is φ = 17814240.

The previous prime is 53442833. The next prime is 53442881. The reversal of 53442864 is 46824435.

53442864 is a `hidden beast` number, since 534 + 42 + 86 + 4 = 666.

It is a super-2 number, since 2×53442864² = 5712279425044992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185422 + ... + 185709.

Almost surely, 2^53442864 is an apocalyptic number.

It is an amenable number.

53442864 is an abundant number, since it is smaller than the sum of its proper divisors (96123332).

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

53442864 is a wasteful number, since it uses less digits than its factorization.

53442864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371145 (or 371136 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 53442864 is about 7310.4626392589. The cubic root of 53442864 is about 376.6719161127.

The spelling of 53442864 in words is "fifty-three million, four hundred forty-two thousand, eight hundred sixty-four".