402560051 has 4 divisors (see below), whose sum is σ = 426240072. Its totient is φ = 378880032.

The previous prime is 402560021. The next prime is 402560057. The reversal of 402560051 is 150065204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402560051 - 2¹⁴ = 402543667 is a prime.

It is a super-2 number, since 2×402560051² = 324109189322245202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402559999 and 402560026.

It is not an unprimeable number, because it can be changed into a prime (402560057) 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, 11839985 + ... + 11840018.

It is an arithmetic number, because the mean of its divisors is an integer number (106560018).

Almost surely, 2^402560051 is an apocalyptic number.

402560051 is a deficient number, since it is larger than the sum of its proper divisors (23680021).

402560051 is a wasteful number, since it uses less digits than its factorization.

402560051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23680020.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 402560051 is about 20063.8991973146. The cubic root of 402560051 is about 738.3748429337.

The spelling of 402560051 in words is "four hundred two million, five hundred sixty thousand, fifty-one".