551345461 has 2 divisors, whose sum is σ = 551345462. Its totient is φ = 551345460.

The previous prime is 551345453. The next prime is 551345471. The reversal of 551345461 is 164543155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453434436 + 97911025 = 21294^2 + 9895^2 .

It is a cyclic number.

It is not a de Polignac number, because 551345461 - 2³ = 551345453 is a prime.

It is equal to p_28912336 and since 551345461 and 28912336 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551345471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275672730 + 275672731.

It is an arithmetic number, because the mean of its divisors is an integer number (275672731).

Almost surely, 2^551345461 is an apocalyptic number.

It is an amenable number.

551345461 is a deficient number, since it is larger than the sum of its proper divisors (1).

551345461 is an equidigital number, since it uses as much as digits as its factorization.

551345461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 34.

The square root of 551345461 is about 23480.7466022697. The cubic root of 551345461 is about 819.9888264391.

The spelling of 551345461 in words is "five hundred fifty-one million, three hundred forty-five thousand, four hundred sixty-one".