525930239 has 4 divisors (see below), whose sum is σ = 527885640. Its totient is φ = 523974840.

The previous prime is 525930193. The next prime is 525930253. The reversal of 525930239 is 932039525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525930239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525930539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977297 + ... + 977834.

It is an arithmetic number, because the mean of its divisors is an integer number (131971410).

Almost surely, 2^525930239 is an apocalyptic number.

525930239 is a deficient number, since it is larger than the sum of its proper divisors (1955401).

525930239 is a wasteful number, since it uses less digits than its factorization.

525930239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955400.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 525930239 is about 22933.1689698567. The cubic root of 525930239 is about 807.1905098896.

The spelling of 525930239 in words is "five hundred twenty-five million, nine hundred thirty thousand, two hundred thirty-nine".