525552399 has 24 divisors (see below), whose sum is σ = 818964432. Its totient is φ = 323531520.

The previous prime is 525552359. The next prime is 525552409. The reversal of 525552399 is 993255525.

525552399 is a `hidden beast` number, since 5 + 2 + 5 + 552 + 3 + 99 = 666.

It is not a de Polignac number, because 525552399 - 2¹³ = 525544207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525552359) 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 in 23 ways as a sum of consecutive naturals, for example, 24297 + ... + 40514.

It is an arithmetic number, because the mean of its divisors is an integer number (34123518).

Almost surely, 2^525552399 is an apocalyptic number.

525552399 is a deficient number, since it is larger than the sum of its proper divisors (293412033).

525552399 is a wasteful number, since it uses less digits than its factorization.

525552399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64887 (or 64884 counting only the distinct ones).

The product of its digits is 607500, while the sum is 45.

The square root of 525552399 is about 22924.9296400229. The cubic root of 525552399 is about 806.9971623657.

The spelling of 525552399 in words is "five hundred twenty-five million, five hundred fifty-two thousand, three hundred ninety-nine".