525470399 has 4 divisors (see below), whose sum is σ = 525617136. Its totient is φ = 525323664.

The previous prime is 525470381. The next prime is 525470417. The reversal of 525470399 is 993074525.

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

It is an interprime number because it is at equal distance from previous prime (525470381) and next prime (525470417).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525470399 is a prime.

It is a super-2 number, since 2×525470399² = 552238280450438402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525470339) 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 3 ways as a sum of consecutive naturals, for example, 67859 + ... + 75204.

It is an arithmetic number, because the mean of its divisors is an integer number (131404284).

Almost surely, 2^525470399 is an apocalyptic number.

525470399 is a deficient number, since it is larger than the sum of its proper divisors (146737).

525470399 is a wasteful number, since it uses less digits than its factorization.

525470399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146736.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 525470399 is about 22923.1411242002. The cubic root of 525470399 is about 806.9551892536.

The spelling of 525470399 in words is "five hundred twenty-five million, four hundred seventy thousand, three hundred ninety-nine".