551051489 has 2 divisors, whose sum is σ = 551051490. Its totient is φ = 551051488.

The previous prime is 551051437. The next prime is 551051513. The reversal of 551051489 is 984150155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493595089 + 57456400 = 22217^2 + 7580^2 .

It is a cyclic number.

It is not a de Polignac number, because 551051489 - 2⁸ = 551051233 is a prime.

It is not a weakly prime, because it can be changed into another prime (551051689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275525744 + 275525745.

It is an arithmetic number, because the mean of its divisors is an integer number (275525745).

Almost surely, 2^551051489 is an apocalyptic number.

It is an amenable number.

551051489 is a deficient number, since it is larger than the sum of its proper divisors (1).

551051489 is an equidigital number, since it uses as much as digits as its factorization.

551051489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 551051489 is about 23474.4859155637. The cubic root of 551051489 is about 819.8430638591.

The spelling of 551051489 in words is "five hundred fifty-one million, fifty-one thousand, four hundred eighty-nine".