551195361 has 20 divisors (see below), whose sum is σ = 824554500. Its totient is φ = 366944256.

The previous prime is 551195311. The next prime is 551195383. The reversal of 551195361 is 163591155.

551195361 = 433² + 434² + ... + 1201².

551195361 is a `hidden beast` number, since 5 + 5 + 119 + 536 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68558400 + 482636961 = 8280^2 + 21969^2 .

It is not a de Polignac number, because 551195361 - 2¹⁰ = 551194337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551195311) 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 19 ways as a sum of consecutive naturals, for example, 57865 + ... + 66713.

It is an arithmetic number, because the mean of its divisors is an integer number (41227725).

Almost surely, 2^551195361 is an apocalyptic number.

It is an amenable number.

551195361 is a deficient number, since it is larger than the sum of its proper divisors (273359139).

551195361 is an equidigital number, since it uses as much as digits as its factorization.

551195361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9630 (or 9621 counting only the distinct ones).

The product of its digits is 20250, while the sum is 36.

The square root of 551195361 is about 23477.5501490253. The cubic root of 551195361 is about 819.9144075840.

The spelling of 551195361 in words is "five hundred fifty-one million, one hundred ninety-five thousand, three hundred sixty-one".