401374251 has 8 divisors (see below), whose sum is σ = 594628560. Its totient is φ = 267582816.

The previous prime is 401374249. The next prime is 401374279. The reversal of 401374251 is 152473104.

401374251 is a `hidden beast` number, since 40 + 1 + 374 + 251 = 666.

It is not a de Polignac number, because 401374251 - 2¹ = 401374249 is a prime.

It is a super-2 number, since 2×401374251² = 322202578731622002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14865713 = 401374251 / (4 + 0 + 1 + 3 + 7 + 4 + 2 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (401374231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7432830 + ... + 7432883.

It is an arithmetic number, because the mean of its divisors is an integer number (74328570).

Almost surely, 2^401374251 is an apocalyptic number.

401374251 is a deficient number, since it is larger than the sum of its proper divisors (193254309).

401374251 is a wasteful number, since it uses less digits than its factorization.

401374251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14865722 (or 14865716 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 401374251 is about 20034.3268167413. The cubic root of 401374251 is about 737.6491325723.

The spelling of 401374251 in words is "four hundred one million, three hundred seventy-four thousand, two hundred fifty-one".