52511999 has 2 divisors, whose sum is σ = 52512000. Its totient is φ = 52511998.

The previous prime is 52511989. The next prime is 52512023. The reversal of 52511999 is 99911525.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52511999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52511989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26255999 + 26256000.

It is an arithmetic number, because the mean of its divisors is an integer number (26256000).

Almost surely, 2^52511999 is an apocalyptic number.

52511999 is a deficient number, since it is larger than the sum of its proper divisors (1).

52511999 is an equidigital number, since it uses as much as digits as its factorization.

52511999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 41.

The square root of 52511999 is about 7246.5163354539. The cubic root of 52511999 is about 374.4721438482.

It can be divided in two parts, 525 and 11999, that multiplied together give a triangular number (6299475 = T₃₅₄₉).

The spelling of 52511999 in words is "fifty-two million, five hundred eleven thousand, nine hundred ninety-nine".