406351555 has 4 divisors (see below), whose sum is σ = 487621872. Its totient is φ = 325081240.

The previous prime is 406351523. The next prime is 406351597. The reversal of 406351555 is 555153604.

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

It is not a de Polignac number, because 406351555 - 2⁵ = 406351523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406351555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40635151 + ... + 40635160.

It is an arithmetic number, because the mean of its divisors is an integer number (121905468).

Almost surely, 2^406351555 is an apocalyptic number.

406351555 is a deficient number, since it is larger than the sum of its proper divisors (81270317).

406351555 is an equidigital number, since it uses as much as digits as its factorization.

406351555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81270316.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 406351555 is about 20158.1634828176. The cubic root of 406351555 is about 740.6857260705.

The spelling of 406351555 in words is "four hundred six million, three hundred fifty-one thousand, five hundred fifty-five".