50566591 has 2 divisors, whose sum is σ = 50566592. Its totient is φ = 50566590.

The previous prime is 50566583. The next prime is 50566597. The reversal of 50566591 is 19566505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50566591 - 2³ = 50566583 is a prime.

It is a super-2 number, since 2×50566591² = 5113960250722562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50566591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50566597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25283295 + 25283296.

It is an arithmetic number, because the mean of its divisors is an integer number (25283296).

Almost surely, 2^50566591 is an apocalyptic number.

50566591 is a deficient number, since it is larger than the sum of its proper divisors (1).

50566591 is an equidigital number, since it uses as much as digits as its factorization.

50566591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 50566591 is about 7111.0189846463. The cubic root of 50566591 is about 369.7894858006.

The spelling of 50566591 in words is "fifty million, five hundred sixty-six thousand, five hundred ninety-one".