551531144 has 16 divisors (see below), whose sum is σ = 1053633420. Its totient is φ = 270562240.

The previous prime is 551531117. The next prime is 551531147. The reversal of 551531144 is 441135155.

It can be written as a sum of positive squares in 2 ways, for example, as 523036900 + 28494244 = 22870^2 + 5338^2 .

It is not an unprimeable number, because it can be changed into a prime (551531147) 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, 649967 + ... + 650814.

Almost surely, 2^551531144 is an apocalyptic number.

It is an amenable number.

551531144 is a deficient number, since it is larger than the sum of its proper divisors (502102276).

551531144 is a wasteful number, since it uses less digits than its factorization.

551531144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300840 (or 1300836 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 551531144 is about 23484.7002109884. The cubic root of 551531144 is about 820.0808684869.

Adding to 551531144 its reverse (441135155), we get a palindrome (992666299).

The spelling of 551531144 in words is "five hundred fifty-one million, five hundred thirty-one thousand, one hundred forty-four".