405051155 has 4 divisors (see below), whose sum is σ = 486061392. Its totient is φ = 324040920.

The previous prime is 405051151. The next prime is 405051169. The reversal of 405051155 is 551150504.

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

It is not a de Polignac number, because 405051155 - 2² = 405051151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405051151) 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, 40505111 + ... + 40505120.

It is an arithmetic number, because the mean of its divisors is an integer number (121515348).

Almost surely, 2^405051155 is an apocalyptic number.

405051155 is a deficient number, since it is larger than the sum of its proper divisors (81010237).

405051155 is an equidigital number, since it uses as much as digits as its factorization.

405051155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81010236.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 405051155 is about 20125.8827135607. The cubic root of 405051155 is about 739.8947713775.

The spelling of 405051155 in words is "four hundred five million, fifty-one thousand, one hundred fifty-five".