2553213721 has 8 divisors (see below), whose sum is σ = 2562025664. Its totient is φ = 2544413040.

The previous prime is 2553213703. The next prime is 2553213779. The reversal of 2553213721 is 1273123552.

2553213721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2553213721 - 2⁹ = 2553213209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2553213821) 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, 882940 + ... + 885826.

It is an arithmetic number, because the mean of its divisors is an integer number (320253208).

Almost surely, 2^2553213721 is an apocalyptic number.

It is an amenable number.

2553213721 is a deficient number, since it is larger than the sum of its proper divisors (8811943).

2553213721 is a wasteful number, since it uses less digits than its factorization.

2553213721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631.

The product of its digits is 12600, while the sum is 31.

The square root of 2553213721 is about 50529.3352519108. The cubic root of 2553213721 is about 1366.7708986998.

The spelling of 2553213721 in words is "two billion, five hundred fifty-three million, two hundred thirteen thousand, seven hundred twenty-one".