401204556 has 48 divisors (see below), whose sum is σ = 1101350880. Its totient is φ = 125867520.

The previous prime is 401204533. The next prime is 401204563. The reversal of 401204556 is 655402104.

401204556 is a `hidden beast` number, since 401 + 204 + 5 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107425 + ... + 111096.

It is an arithmetic number, because the mean of its divisors is an integer number (22944810).

Almost surely, 2^401204556 is an apocalyptic number.

It is an amenable number.

401204556 is an abundant number, since it is smaller than the sum of its proper divisors (700146324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401204556 is a wasteful number, since it uses less digits than its factorization.

401204556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218551 (or 218543 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 401204556 is about 20030.0912628974. The cubic root of 401204556 is about 737.5451622635.

The spelling of 401204556 in words is "four hundred one million, two hundred four thousand, five hundred fifty-six".