401366523 has 16 divisors (see below), whose sum is σ = 541157760. Its totient is φ = 264586176.

The previous prime is 401366501. The next prime is 401366527. The reversal of 401366523 is 325663104.

It is not a de Polignac number, because 401366523 - 2⁸ = 401366267 is a prime.

It is a super-2 number, since 2×401366523² = 322190171570219058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401366527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274368 + ... + 275826.

It is an arithmetic number, because the mean of its divisors is an integer number (33822360).

Almost surely, 2^401366523 is an apocalyptic number.

401366523 is a deficient number, since it is larger than the sum of its proper divisors (139791237).

401366523 is a wasteful number, since it uses less digits than its factorization.

401366523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 401366523 is about 20034.1339468418. The cubic root of 401366523 is about 737.6443983465.

The spelling of 401366523 in words is "four hundred one million, three hundred sixty-six thousand, five hundred twenty-three".