402051556 has 12 divisors (see below), whose sum is σ = 703809792. Its totient is φ = 200963048.

The previous prime is 402051553. The next prime is 402051557. The reversal of 402051556 is 655150204.

It is a super-2 number, since 2×402051556² = 323290907364042272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402051553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621 + ... + 28363.

It is an arithmetic number, because the mean of its divisors is an integer number (58650816).

Almost surely, 2^402051556 is an apocalyptic number.

It is an amenable number.

402051556 is a deficient number, since it is larger than the sum of its proper divisors (301758236).

402051556 is a wasteful number, since it uses less digits than its factorization.

402051556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31370 (or 31368 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 402051556 is about 20051.2233043273. The cubic root of 402051556 is about 738.0638184347.

The spelling of 402051556 in words is "four hundred two million, fifty-one thousand, five hundred fifty-six".