53512840 has 32 divisors (see below), whose sum is σ = 121538880. Its totient is φ = 21203392.

The previous prime is 53512819. The next prime is 53512861. The reversal of 53512840 is 4821535.

It is an interprime number because it is at equal distance from previous prime (53512819) and next prime (53512861).

It is a junction number, because it is equal to n+sod(n) for n = 53512799 and 53512808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972 + ... + 10531.

It is an arithmetic number, because the mean of its divisors is an integer number (3798090).

Almost surely, 2^53512840 is an apocalyptic number.

It is an amenable number.

53512840 is an abundant number, since it is smaller than the sum of its proper divisors (68026040).

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

53512840 is a wasteful number, since it uses less digits than its factorization.

53512840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12621 (or 12617 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 53512840 is about 7315.2470908371. The cubic root of 53512840 is about 376.8362442466.

The spelling of 53512840 in words is "fifty-three million, five hundred twelve thousand, eight hundred forty".