397397255 has 16 divisors (see below), whose sum is σ = 508339200. Its totient is φ = 297367200.

The previous prime is 397397227. The next prime is 397397281. The reversal of 397397255 is 552793793.

It is not a de Polignac number, because 397397255 - 2⁸ = 397396999 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, 18971 + ... + 33980.

It is an arithmetic number, because the mean of its divisors is an integer number (31771200).

Almost surely, 2^397397255 is an apocalyptic number.

397397255 is a deficient number, since it is larger than the sum of its proper divisors (110941945).

397397255 is a wasteful number, since it uses less digits than its factorization.

397397255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53054.

The product of its digits is 1786050, while the sum is 50.

The square root of 397397255 is about 19934.8251810745. The cubic root of 397397255 is about 735.2047218459.

The spelling of 397397255 in words is "three hundred ninety-seven million, three hundred ninety-seven thousand, two hundred fifty-five".