520431442254 has 28 divisors (see below), whose sum is σ = 1170435325056. Its totient is φ = 173477146932.

The previous prime is 520431442249. The next prime is 520431442283. The reversal of 520431442254 is 452244134025.

520431442254 is a `hidden beast` number, since 5 + 204 + 3 + 1 + 442 + 2 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 178472974 + ... + 178475889.

Almost surely, 2^520431442254 is an apocalyptic number.

520431442254 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

520431442254 is an abundant number, since it is smaller than the sum of its proper divisors (650003882802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520431442254 is an equidigital number, since it uses as much as digits as its factorization.

520431442254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356948883 (or 356948868 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 520431442254 its reverse (452244134025), we get a palindrome (972675576279).

The spelling of 520431442254 in words is "five hundred twenty billion, four hundred thirty-one million, four hundred forty-two thousand, two hundred fifty-four".