2552274721 has 4 divisors (see below), whose sum is σ = 2557390000. Its totient is φ = 2547159444.

The previous prime is 2552274713. The next prime is 2552274749. The reversal of 2552274721 is 1274722552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2552274721 - 2³ = 2552274713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2552274521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556891 + ... + 2557888.

It is an arithmetic number, because the mean of its divisors is an integer number (639347500).

Almost surely, 2^2552274721 is an apocalyptic number.

It is an amenable number.

2552274721 is a deficient number, since it is larger than the sum of its proper divisors (5115279).

2552274721 is an equidigital number, since it uses as much as digits as its factorization.

2552274721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115278.

The product of its digits is 78400, while the sum is 37.

The square root of 2552274721 is about 50520.0427652234. The cubic root of 2552274721 is about 1366.6033248917.

The spelling of 2552274721 in words is "two billion, five hundred fifty-two million, two hundred seventy-four thousand, seven hundred twenty-one".