53401520 has 20 divisors (see below), whose sum is σ = 124158720. Its totient is φ = 21360576.

The previous prime is 53401501. The next prime is 53401547. The reversal of 53401520 is 2510435.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 53401492 and 53401501.

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, 333680 + ... + 333839.

It is an arithmetic number, because the mean of its divisors is an integer number (6207936).

Almost surely, 2^53401520 is an apocalyptic number.

It is an amenable number.

53401520 is an abundant number, since it is smaller than the sum of its proper divisors (70757200).

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

53401520 is a wasteful number, since it uses less digits than its factorization.

53401520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667532 (or 667526 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 53401520 is about 7307.6343641427. The cubic root of 53401520 is about 376.5747585123.

Adding to 53401520 its reverse (2510435), we get a palindrome (55911955).

The spelling of 53401520 in words is "fifty-three million, four hundred one thousand, five hundred twenty".