255402361 has 4 divisors (see below), whose sum is σ = 255763300. Its totient is φ = 255041424.

The previous prime is 255402359. The next prime is 255402377. The reversal of 255402361 is 163204552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35176761 + 220225600 = 5931^2 + 14840^2 .

It is a cyclic number.

It is not a de Polignac number, because 255402361 - 2¹ = 255402359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255402311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179406 + ... + 180823.

It is an arithmetic number, because the mean of its divisors is an integer number (63940825).

Almost surely, 2^255402361 is an apocalyptic number.

It is an amenable number.

255402361 is a deficient number, since it is larger than the sum of its proper divisors (360939).

255402361 is an equidigital number, since it uses as much as digits as its factorization.

255402361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360938.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 255402361 is about 15981.3128684724. The cubic root of 255402361 is about 634.4659249612.

The spelling of 255402361 in words is "two hundred fifty-five million, four hundred two thousand, three hundred sixty-one".