551304261 has 6 divisors (see below), whose sum is σ = 796328390. Its totient is φ = 367536168.

The previous prime is 551304211. The next prime is 551304269. The reversal of 551304261 is 162403155.

It can be written as a sum of positive squares in only one way, i.e., 369216225 + 182088036 = 19215^2 + 13494^2 .

It is not a de Polignac number, because 551304261 - 2¹⁰ = 551303237 is a prime.

It is a super-2 number, since 2×551304261² = 607872776393512242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551304269) 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 5 ways as a sum of consecutive naturals, for example, 30628006 + ... + 30628023.

Almost surely, 2^551304261 is an apocalyptic number.

It is an amenable number.

551304261 is a deficient number, since it is larger than the sum of its proper divisors (245024129).

551304261 is a wasteful number, since it uses less digits than its factorization.

551304261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61256035 (or 61256032 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 551304261 is about 23479.8692713567. The cubic root of 551304261 is about 819.9684010231.

The spelling of 551304261 in words is "five hundred fifty-one million, three hundred four thousand, two hundred sixty-one".