253420655 has 8 divisors (see below), whose sum is σ = 308388384. Its totient is φ = 199880800.

The previous prime is 253420597. The next prime is 253420669. The reversal of 253420655 is 556024352.

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

It is not a de Polignac number, because 253420655 - 2⁶ = 253420591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356576 + ... + 357285.

It is an arithmetic number, because the mean of its divisors is an integer number (38548548).

Almost surely, 2^253420655 is an apocalyptic number.

253420655 is a deficient number, since it is larger than the sum of its proper divisors (54967729).

253420655 is an equidigital number, since it uses as much as digits as its factorization.

253420655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713937.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 253420655 is about 15919.1914053447. The cubic root of 253420655 is about 632.8206896527.

The spelling of 253420655 in words is "two hundred fifty-three million, four hundred twenty thousand, six hundred fifty-five".