551454581 has 2 divisors, whose sum is σ = 551454582. Its totient is φ = 551454580.

The previous prime is 551454539. The next prime is 551454599. The reversal of 551454581 is 185454155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478078225 + 73376356 = 21865^2 + 8566^2 .

It is a cyclic number.

It is not a de Polignac number, because 551454581 - 2¹⁸ = 551192437 is a prime.

It is a super-2 number, since 2×551454581² = 608204309811771122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551454521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275727290 + 275727291.

It is an arithmetic number, because the mean of its divisors is an integer number (275727291).

Almost surely, 2^551454581 is an apocalyptic number.

It is an amenable number.

551454581 is a deficient number, since it is larger than the sum of its proper divisors (1).

551454581 is an equidigital number, since it uses as much as digits as its factorization.

551454581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80000, while the sum is 38.

The square root of 551454581 is about 23483.0700931543. The cubic root of 551454581 is about 820.0429191297.

The spelling of 551454581 in words is "five hundred fifty-one million, four hundred fifty-four thousand, five hundred eighty-one".