255111402 has 32 divisors (see below), whose sum is σ = 627967872. Its totient is φ = 67281984.

The previous prime is 255111397. The next prime is 255111403. The reversal of 255111402 is 204111552.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (255111403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233073 + ... + 234164.

It is an arithmetic number, because the mean of its divisors is an integer number (19623996).

Almost surely, 2^255111402 is an apocalyptic number.

255111402 is an abundant number, since it is smaller than the sum of its proper divisors (372856470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255111402 is a wasteful number, since it uses less digits than its factorization.

255111402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467262.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 255111402 is about 15972.2071737127. The cubic root of 255111402 is about 634.2249017172.

Adding to 255111402 its reverse (204111552), we get a palindrome (459222954).

The spelling of 255111402 in words is "two hundred fifty-five million, one hundred eleven thousand, four hundred two".