550721625 has 16 divisors (see below), whose sum is σ = 916401408. Its totient is φ = 293718000.

The previous prime is 550721623. The next prime is 550721627. The reversal of 550721625 is 526127055.

It is an interprime number because it is at equal distance from previous prime (550721623) and next prime (550721627).

It is not a de Polignac number, because 550721625 - 2¹ = 550721623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550721621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733921 + ... + 734670.

It is an arithmetic number, because the mean of its divisors is an integer number (57275088).

Almost surely, 2^550721625 is an apocalyptic number.

It is an amenable number.

550721625 is a deficient number, since it is larger than the sum of its proper divisors (365679783).

550721625 is a wasteful number, since it uses less digits than its factorization.

550721625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468609 (or 1468599 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 550721625 is about 23467.4588526325. The cubic root of 550721625 is about 819.6794429165.

The spelling of 550721625 in words is "five hundred fifty million, seven hundred twenty-one thousand, six hundred twenty-five".