551944 has 8 divisors (see below), whose sum is σ = 1034910. Its totient is φ = 275968.

The previous prime is 551933. The next prime is 551951. The reversal of 551944 is 449155.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 19044 = 730^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34489 + ... + 34504.

2⁵⁵¹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

551944 is a deficient number, since it is larger than the sum of its proper divisors (482966).

551944 is a wasteful number, since it uses less digits than its factorization.

551944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68999 (or 68995 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 551944 is about 742.9293371513. The cubic root of 551944 is about 82.0285444943.

The spelling of 551944 in words is "five hundred fifty-one thousand, nine hundred forty-four".