397150555 has 4 divisors (see below), whose sum is σ = 476580672. Its totient is φ = 317720440.

The previous prime is 397150543. The next prime is 397150577. The reversal of 397150555 is 555051793.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 397150555 - 2¹³ = 397142363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39715051 + ... + 39715060.

It is an arithmetic number, because the mean of its divisors is an integer number (119145168).

Almost surely, 2^397150555 is an apocalyptic number.

397150555 is a deficient number, since it is larger than the sum of its proper divisors (79430117).

397150555 is an equidigital number, since it uses as much as digits as its factorization.

397150555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79430116.

The product of its (nonzero) digits is 118125, while the sum is 40.

The square root of 397150555 is about 19928.6365564732. The cubic root of 397150555 is about 735.0525545897.

The spelling of 397150555 in words is "three hundred ninety-seven million, one hundred fifty thousand, five hundred fifty-five".