53624521 has 2 divisors, whose sum is σ = 53624522. Its totient is φ = 53624520.

The previous prime is 53624503. The next prime is 53624531. The reversal of 53624521 is 12542635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52925625 + 698896 = 7275^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 53624521 - 2⁹ = 53624009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53624521.

It is not a weakly prime, because it can be changed into another prime (53624531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26812260 + 26812261.

It is an arithmetic number, because the mean of its divisors is an integer number (26812261).

Almost surely, 2^53624521 is an apocalyptic number.

It is an amenable number.

53624521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53624521 is an equidigital number, since it uses as much as digits as its factorization.

53624521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 53624521 is about 7322.8765522846. The cubic root of 53624521 is about 377.0982138046.

It can be divided in two parts, 53624 and 521, that added together give a palindrome (54145).

The spelling of 53624521 in words is "fifty-three million, six hundred twenty-four thousand, five hundred twenty-one".