630056551 has 4 divisors (see below), whose sum is σ = 633576600. Its totient is φ = 626536504.

The previous prime is 630056519. The next prime is 630056563. The reversal of 630056551 is 155650036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630056551 - 2⁵ = 630056519 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 (630056051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759756 + ... + 1760113.

It is an arithmetic number, because the mean of its divisors is an integer number (158394150).

Almost surely, 2^630056551 is an apocalyptic number.

630056551 is a deficient number, since it is larger than the sum of its proper divisors (3520049).

630056551 is a wasteful number, since it uses less digits than its factorization.

630056551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520048.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 630056551 is about 25100.9272936280. The cubic root of 630056551 is about 857.2875377375.

The spelling of 630056551 in words is "six hundred thirty million, fifty-six thousand, five hundred fifty-one".