52513387 has 2 divisors, whose sum is σ = 52513388. Its totient is φ = 52513386.

The previous prime is 52513381. The next prime is 52513399. The reversal of 52513387 is 78331525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52513387 - 2³ = 52513379 is a prime.

It is not a weakly prime, because it can be changed into another prime (52513381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26256693 + 26256694.

It is an arithmetic number, because the mean of its divisors is an integer number (26256694).

Almost surely, 2^52513387 is an apocalyptic number.

52513387 is a deficient number, since it is larger than the sum of its proper divisors (1).

52513387 is an equidigital number, since it uses as much as digits as its factorization.

52513387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 52513387 is about 7246.6121049771. The cubic root of 52513387 is about 374.4754431751.

It can be divided in two parts, 52513 and 387, that added together give a square (52900 = 230²).

The spelling of 52513387 in words is "fifty-two million, five hundred thirteen thousand, three hundred eighty-seven".