2552721626 has 16 divisors (see below), whose sum is σ = 4712717184. Its totient is φ = 1009867824.

The previous prime is 2552721601. The next prime is 2552721637. The reversal of 2552721626 is 6261272552.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2552721626.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012790 + ... + 7013153.

It is an arithmetic number, because the mean of its divisors is an integer number (294544824).

Almost surely, 2^2552721626 is an apocalyptic number.

2552721626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2552721626 is a deficient number, since it is larger than the sum of its proper divisors (2159995558).

2552721626 is a wasteful number, since it uses less digits than its factorization.

2552721626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14025965.

The product of its digits is 100800, while the sum is 38.

The square root of 2552721626 is about 50524.4656181537. The cubic root of 2552721626 is about 1366.6830846200.

The spelling of 2552721626 in words is "two billion, five hundred fifty-two million, seven hundred twenty-one thousand, six hundred twenty-six".