53324840 has 16 divisors (see below), whose sum is σ = 119980980. Its totient is φ = 21329920.

The previous prime is 53324839. The next prime is 53324857. The reversal of 53324840 is 4842335.

It can be written as a sum of positive squares in 2 ways, for example, as 49646116 + 3678724 = 7046^2 + 1918^2 .

It is a super-2 number, since 2×53324840² = 5687077122051200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666521 + ... + 666600.

Almost surely, 2^53324840 is an apocalyptic number.

It is an amenable number.

53324840 is an abundant number, since it is smaller than the sum of its proper divisors (66656140).

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

53324840 is a wasteful number, since it uses less digits than its factorization.

53324840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333132 (or 1333128 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 53324840 is about 7302.3859114676. The cubic root of 53324840 is about 376.3944291600.

The spelling of 53324840 in words is "fifty-three million, three hundred twenty-four thousand, eight hundred forty".