402215155 has 8 divisors (see below), whose sum is σ = 511049952. Its totient is φ = 302844288.

The previous prime is 402215141. The next prime is 402215159. The reversal of 402215155 is 551512204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402215155 - 2²⁷ = 267997427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402215159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365887 + ... + 2366056.

It is an arithmetic number, because the mean of its divisors is an integer number (63881244).

Almost surely, 2^402215155 is an apocalyptic number.

402215155 is a deficient number, since it is larger than the sum of its proper divisors (108834797).

402215155 is a wasteful number, since it uses less digits than its factorization.

402215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731965.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 402215155 is about 20055.3024160694. The cubic root of 402215155 is about 738.1639134986.

Adding to 402215155 its reverse (551512204), we get a palindrome (953727359).

The spelling of 402215155 in words is "four hundred two million, two hundred fifteen thousand, one hundred fifty-five".