575655551 has 2 divisors, whose sum is σ = 575655552. Its totient is φ = 575655550.

The previous prime is 575655533. The next prime is 575655599. The reversal of 575655551 is 155556575.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-575655551 is a prime.

It is a super-2 number, since 2×575655551² = 662758626794227202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (575625551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287827775 + 287827776.

It is an arithmetic number, because the mean of its divisors is an integer number (287827776).

Almost surely, 2^575655551 is an apocalyptic number.

575655551 is a deficient number, since it is larger than the sum of its proper divisors (1).

575655551 is an equidigital number, since it uses as much as digits as its factorization.

575655551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 656250, while the sum is 44.

The square root of 575655551 is about 23992.8229060275. The cubic root of 575655551 is about 831.8676436514.

The spelling of 575655551 in words is "five hundred seventy-five million, six hundred fifty-five thousand, five hundred fifty-one".