253421355 has 32 divisors (see below), whose sum is σ = 450696960. Its totient is φ = 120548480.

The previous prime is 253421353. The next prime is 253421407. The reversal of 253421355 is 553124352.

It is not a de Polignac number, because 253421355 - 2¹ = 253421353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253421351) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5745 + ... + 23234.

It is an arithmetic number, because the mean of its divisors is an integer number (14084280).

Almost surely, 2^253421355 is an apocalyptic number.

253421355 is a deficient number, since it is larger than the sum of its proper divisors (197275605).

253421355 is a wasteful number, since it uses less digits than its factorization.

253421355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29051.

The product of its digits is 18000, while the sum is 30.

The square root of 253421355 is about 15919.2133913708. The cubic root of 253421355 is about 632.8212723125.

The spelling of 253421355 in words is "two hundred fifty-three million, four hundred twenty-one thousand, three hundred fifty-five".