402551055 has 12 divisors (see below), whose sum is σ = 697755240. Its totient is φ = 214693872.

The previous prime is 402551053. The next prime is 402551069. The reversal of 402551055 is 550155204.

It is not a de Polignac number, because 402551055 - 2¹ = 402551053 is a prime.

It is a super-2 number, since 2×402551055² = 324094703763226050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402551053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4472745 + ... + 4472834.

It is an arithmetic number, because the mean of its divisors is an integer number (58146270).

Almost surely, 2^402551055 is an apocalyptic number.

402551055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

402551055 is a deficient number, since it is larger than the sum of its proper divisors (295204185).

402551055 is a wasteful number, since it uses less digits than its factorization.

402551055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8945590 (or 8945587 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 402551055 is about 20063.6750123202. The cubic root of 402551055 is about 738.3693427443.

The spelling of 402551055 in words is "four hundred two million, five hundred fifty-one thousand, fifty-five".