402015255 has 16 divisors (see below), whose sum is σ = 665405280. Its totient is φ = 207014528.

The previous prime is 402015247. The next prime is 402015287. The reversal of 402015255 is 552510204.

It is a happy number.

It is not a de Polignac number, because 402015255 - 2³ = 402015247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461652 + ... + 462521.

It is an arithmetic number, because the mean of its divisors is an integer number (41587830).

Almost surely, 2^402015255 is an apocalyptic number.

402015255 is a deficient number, since it is larger than the sum of its proper divisors (263390025).

402015255 is a wasteful number, since it uses less digits than its factorization.

402015255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924210.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 402015255 is about 20050.3180772775. The cubic root of 402015255 is about 738.0416046492.

Adding to 402015255 its reverse (552510204), we get a palindrome (954525459).

The spelling of 402015255 in words is "four hundred two million, fifteen thousand, two hundred fifty-five".