525519091 has 2 divisors, whose sum is σ = 525519092. Its totient is φ = 525519090.

The previous prime is 525519061. The next prime is 525519133. The reversal of 525519091 is 190915525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525519091 - 2²⁵ = 491964659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525519091.

It is not a weakly prime, because it can be changed into another prime (525519031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262759545 + 262759546.

It is an arithmetic number, because the mean of its divisors is an integer number (262759546).

Almost surely, 2^525519091 is an apocalyptic number.

525519091 is a deficient number, since it is larger than the sum of its proper divisors (1).

525519091 is an equidigital number, since it uses as much as digits as its factorization.

525519091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 37.

The square root of 525519091 is about 22924.2031704485. The cubic root of 525519091 is about 806.9801136189.

The spelling of 525519091 in words is "five hundred twenty-five million, five hundred nineteen thousand, ninety-one".