551264771 has 2 divisors, whose sum is σ = 551264772. Its totient is φ = 551264770.

The previous prime is 551264731. The next prime is 551264801. The reversal of 551264771 is 177462155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551264771 is a prime.

It is not a weakly prime, because it can be changed into another prime (551264711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275632385 + 275632386.

It is an arithmetic number, because the mean of its divisors is an integer number (275632386).

Almost surely, 2^551264771 is an apocalyptic number.

551264771 is a deficient number, since it is larger than the sum of its proper divisors (1).

551264771 is an equidigital number, since it uses as much as digits as its factorization.

551264771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The square root of 551264771 is about 23479.0283231653. The cubic root of 551264771 is about 819.9488224058.

It can be divided in two parts, 551 and 264771, that multiplied together give a triangular number (145888821 = T₁₇₀₈₁).

The spelling of 551264771 in words is "five hundred fifty-one million, two hundred sixty-four thousand, seven hundred seventy-one".