255320478 has 48 divisors (see below), whose sum is σ = 660018960. Its totient is φ = 72947952.

The previous prime is 255320477. The next prime is 255320503. The reversal of 255320478 is 874023552.

It is a super-2 number, since 2×255320478² = 130377092972296968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255320477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45601 + ... + 50892.

It is an arithmetic number, because the mean of its divisors is an integer number (13750395).

Almost surely, 2^255320478 is an apocalyptic number.

255320478 is an abundant number, since it is smaller than the sum of its proper divisors (404698482).

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

255320478 is a wasteful number, since it uses less digits than its factorization.

255320478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96518 (or 96505 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 255320478 is about 15978.7508272706. The cubic root of 255320478 is about 634.3981136247.

The spelling of 255320478 in words is "two hundred fifty-five million, three hundred twenty thousand, four hundred seventy-eight".