255451515 has 32 divisors (see below), whose sum is σ = 457940736. Its totient is φ = 120504960.

The previous prime is 255451489. The next prime is 255451531. The reversal of 255451515 is 515154552.

It is not a de Polignac number, because 255451515 - 2¹⁶ = 255385979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 14817 + ... + 27026.

It is an arithmetic number, because the mean of its divisors is an integer number (14310648).

Almost surely, 2^255451515 is an apocalyptic number.

255451515 is a deficient number, since it is larger than the sum of its proper divisors (202489221).

255451515 is a wasteful number, since it uses less digits than its factorization.

255451515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41899.

The product of its digits is 25000, while the sum is 33.

The square root of 255451515 is about 15982.8506531219. The cubic root of 255451515 is about 634.5066248429.

The spelling of 255451515 in words is "two hundred fifty-five million, four hundred fifty-one thousand, five hundred fifteen".