53242520 has 16 divisors (see below), whose sum is σ = 119795760. Its totient is φ = 21296992.

The previous prime is 53242517. The next prime is 53242523. The reversal of 53242520 is 2524235.

It is an interprime number because it is at equal distance from previous prime (53242517) and next prime (53242523).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53242523) 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, 665492 + ... + 665571.

It is an arithmetic number, because the mean of its divisors is an integer number (7487235).

Almost surely, 2^53242520 is an apocalyptic number.

It is an amenable number.

53242520 is an abundant number, since it is smaller than the sum of its proper divisors (66553240).

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

53242520 is a wasteful number, since it uses less digits than its factorization.

53242520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331074 (or 1331070 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 53242520 is about 7296.7472205086. The cubic root of 53242520 is about 376.2006436289.

Adding to 53242520 its reverse (2524235), we get a palindrome (55766755).

The spelling of 53242520 in words is "fifty-three million, two hundred forty-two thousand, five hundred twenty".