53402532520 has 128 divisors (see below), whose sum is σ = 126967357440. Its totient is φ = 20175217920.

The previous prime is 53402532511. The next prime is 53402532529. The reversal of 53402532520 is 2523520435.

It is an interprime number because it is at equal distance from previous prime (53402532511) and next prime (53402532529).

It is a super-3 number, since 3×53402532520³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (53402532529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26874967 + ... + 26876953.

It is an arithmetic number, because the mean of its divisors is an integer number (991932480).

Almost surely, 2^53402532520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53402532520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63483678720).

53402532520 is an abundant number, since it is smaller than the sum of its proper divisors (73564824920).

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

53402532520 is a wasteful number, since it uses less digits than its factorization.

53402532520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

The spelling of 53402532520 in words is "fifty-three billion, four hundred two million, five hundred thirty-two thousand, five hundred twenty".