400550255 has 16 divisors (see below), whose sum is σ = 560539200. Its totient is φ = 274661856.

The previous prime is 400550207. The next prime is 400550299. The reversal of 400550255 is 552055004.

It is not a de Polignac number, because 400550255 - 2²⁰ = 399501679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115064 + ... + 118493.

It is an arithmetic number, because the mean of its divisors is an integer number (35033700).

Almost surely, 2^400550255 is an apocalyptic number.

400550255 is a deficient number, since it is larger than the sum of its proper divisors (159988945).

400550255 is an equidigital number, since it uses as much as digits as its factorization.

400550255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233583 (or 233569 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 400550255 is about 20013.7516473049. The cubic root of 400550255 is about 737.1440043810.

The spelling of 400550255 in words is "four hundred million, five hundred fifty thousand, two hundred fifty-five".