52620540 has 48 divisors (see below), whose sum is σ = 168387072. Its totient is φ = 12027456.

The previous prime is 52620539. The next prime is 52620541. The reversal of 52620540 is 4502625.

It is an interprime number because it is at equal distance from previous prime (52620539) and next prime (52620541).

It is a self number, because there is not a number n which added to its sum of digits gives 52620540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52620541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62224 + ... + 63063.

It is an arithmetic number, because the mean of its divisors is an integer number (3508064).

Almost surely, 2^52620540 is an apocalyptic number.

It is an amenable number.

52620540 is an abundant number, since it is smaller than the sum of its proper divisors (115766532).

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

52620540 is a wasteful number, since it uses less digits than its factorization.

52620540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125306 (or 125304 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 52620540 is about 7254.0016542595. The cubic root of 52620540 is about 374.7299744988.

Subtracting from 52620540 its sum of digits (24), we obtain a square (52620516 = 7254²).

The spelling of 52620540 in words is "fifty-two million, six hundred twenty thousand, five hundred forty".