405252155 has 32 divisors (see below), whose sum is σ = 613163520. Its totient is φ = 249765120.

The previous prime is 405252143. The next prime is 405252187. The reversal of 405252155 is 551252504.

It is not a de Polignac number, because 405252155 - 2⁶ = 405252091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28352 + ... + 40178.

It is an arithmetic number, because the mean of its divisors is an integer number (19161360).

Almost surely, 2^405252155 is an apocalyptic number.

405252155 is a deficient number, since it is larger than the sum of its proper divisors (207911365).

405252155 is a wasteful number, since it uses less digits than its factorization.

405252155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11939.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 405252155 is about 20130.8756640142. The cubic root of 405252155 is about 740.0171380253.

The spelling of 405252155 in words is "four hundred five million, two hundred fifty-two thousand, one hundred fifty-five".