525531239 has 4 divisors (see below), whose sum is σ = 539734824. Its totient is φ = 511327656.

The previous prime is 525531233. The next prime is 525531257. The reversal of 525531239 is 932135525.

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

It is a cyclic number.

It is not a de Polignac number, because 525531239 - 2²⁰ = 524482663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525531199 and 525531208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525531233) 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, 7101737 + ... + 7101810.

It is an arithmetic number, because the mean of its divisors is an integer number (134933706).

Almost surely, 2^525531239 is an apocalyptic number.

525531239 is a deficient number, since it is larger than the sum of its proper divisors (14203585).

525531239 is a wasteful number, since it uses less digits than its factorization.

525531239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14203584.

The product of its digits is 40500, while the sum is 35.

The square root of 525531239 is about 22924.4681290537. The cubic root of 525531239 is about 806.9863316733.

The spelling of 525531239 in words is "five hundred twenty-five million, five hundred thirty-one thousand, two hundred thirty-nine".