551357361 has 15 divisors (see below), whose sum is σ = 823948411. Its totient is φ = 367430688.

The previous prime is 551357341. The next prime is 551357377. The reversal of 551357361 is 163753155.

The square root of 551357361 is 23481.

It is a perfect power (a square), and thus also a powerful number.

551357361 is a `hidden beast` number, since 551 + 35 + 73 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 265070961 + 286286400 = 16281^2 + 16920^2 .

It is not a de Polignac number, because 551357361 - 2¹⁵ = 551324593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551357321) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 210025 + ... + 212633.

Almost surely, 2^551357361 is an apocalyptic number.

551357361 is the 23481-st square number.

551357361 is the 11741-st centered octagonal number.

It is an amenable number.

551357361 is a deficient number, since it is larger than the sum of its proper divisors (272591050).

551357361 is an frugal number, since it uses more digits than its factorization.

551357361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 2612 counting only the distinct ones).

The product of its digits is 47250, while the sum is 36.

The cubic root of 551357361 is about 819.9947258237.

Multiplying 551357361 by its sum of digits (36), we get a square (19848864996 = 140886²).

The spelling of 551357361 in words is "five hundred fifty-one million, three hundred fifty-seven thousand, three hundred sixty-one".