621351253 has 8 divisors (see below), whose sum is σ = 632390976. Its totient is φ = 610380000.

The previous prime is 621351221. The next prime is 621351257. The reversal of 621351253 is 352153126.

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

It is a cyclic number.

It is not a de Polignac number, because 621351253 - 2⁵ = 621351221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621351257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368 + ... + 35278.

It is an arithmetic number, because the mean of its divisors is an integer number (79048872).

Almost surely, 2^621351253 is an apocalyptic number.

It is an amenable number.

621351253 is a deficient number, since it is larger than the sum of its proper divisors (11039723).

621351253 is a wasteful number, since it uses less digits than its factorization.

621351253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34235.

The product of its digits is 5400, while the sum is 28.

The square root of 621351253 is about 24926.9182411304. The cubic root of 621351253 is about 853.3209198057.

The spelling of 621351253 in words is "six hundred twenty-one million, three hundred fifty-one thousand, two hundred fifty-three".