2621905253 has 8 divisors (see below), whose sum is σ = 2900546496. Its totient is φ = 2349978400.

The previous prime is 2621905241. The next prime is 2621905267. The reversal of 2621905253 is 3525091262.

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

It is a de Polignac number, because none of the positive numbers 2^k-2621905253 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 (2621965253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1677776 + ... + 1679337.

It is an arithmetic number, because the mean of its divisors is an integer number (362568312).

Almost surely, 2^2621905253 is an apocalyptic number.

It is an amenable number.

2621905253 is a deficient number, since it is larger than the sum of its proper divisors (278641243).

2621905253 is a wasteful number, since it uses less digits than its factorization.

2621905253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357195.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2621905253 is about 51204.5432847516. The cubic root of 2621905253 is about 1378.9197688331.

The spelling of 2621905253 in words is "two billion, six hundred twenty-one million, nine hundred five thousand, two hundred fifty-three".