255520542 has 8 divisors (see below), whose sum is σ = 511041096. Its totient is φ = 85173512.

The previous prime is 255520511. The next prime is 255520567. The reversal of 255520542 is 245025552.

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

255520542 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21293373 + ... + 21293384.

It is an arithmetic number, because the mean of its divisors is an integer number (63880137).

Almost surely, 2^255520542 is an apocalyptic number.

255520542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255520542 is a wasteful number, since it uses less digits than its factorization.

255520542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42586762.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 255520542 is about 15985.0099155427. The cubic root of 255520542 is about 634.5637709050.

The spelling of 255520542 in words is "two hundred fifty-five million, five hundred twenty thousand, five hundred forty-two".