525521315 has 8 divisors (see below), whose sum is σ = 687955248. Its totient is φ = 382197280.

The previous prime is 525521287. The next prime is 525521363. The reversal of 525521315 is 513125525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525521315 - 2⁶ = 525521251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4777412 + ... + 4777521.

It is an arithmetic number, because the mean of its divisors is an integer number (85994406).

Almost surely, 2^525521315 is an apocalyptic number.

525521315 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

525521315 is a deficient number, since it is larger than the sum of its proper divisors (162433933).

525521315 is a wasteful number, since it uses less digits than its factorization.

525521315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554949.

The product of its digits is 7500, while the sum is 29.

The square root of 525521315 is about 22924.2516780810. The cubic root of 525521315 is about 806.9812519989.

The spelling of 525521315 in words is "five hundred twenty-five million, five hundred twenty-one thousand, three hundred fifteen".