53612840 has 16 divisors (see below), whose sum is σ = 120628980. Its totient is φ = 21445120.

The previous prime is 53612837. The next prime is 53612843. The reversal of 53612840 is 4821635.

It is an interprime number because it is at equal distance from previous prime (53612837) and next prime (53612843).

It can be written as a sum of positive squares in 2 ways, for example, as 53611684 + 1156 = 7322^2 + 34^2 .

It is a super-2 number, since 2×53612840² = 5748673225731200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53612843) 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, 670121 + ... + 670200.

Almost surely, 2^53612840 is an apocalyptic number.

It is an amenable number.

53612840 is an abundant number, since it is smaller than the sum of its proper divisors (67016140).

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

53612840 is a wasteful number, since it uses less digits than its factorization.

53612840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340332 (or 1340328 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 53612840 is about 7322.0789397547. The cubic root of 53612840 is about 377.0708307838.

The spelling of 53612840 in words is "fifty-three million, six hundred twelve thousand, eight hundred forty".