551456461 has 2 divisors, whose sum is σ = 551456462. Its totient is φ = 551456460.

The previous prime is 551456453. The next prime is 551456471. The reversal of 551456461 is 164654155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523036900 + 28419561 = 22870^2 + 5331^2 .

It is a cyclic number.

It is not a de Polignac number, because 551456461 - 2³ = 551456453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551456461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551456401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275728230 + 275728231.

It is an arithmetic number, because the mean of its divisors is an integer number (275728231).

Almost surely, 2^551456461 is an apocalyptic number.

It is an amenable number.

551456461 is a deficient number, since it is larger than the sum of its proper divisors (1).

551456461 is an equidigital number, since it uses as much as digits as its factorization.

551456461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 551456461 is about 23483.1101219579. The cubic root of 551456461 is about 820.0438510160.

The spelling of 551456461 in words is "five hundred fifty-one million, four hundred fifty-six thousand, four hundred sixty-one".