53557199 has 2 divisors, whose sum is σ = 53557200. Its totient is φ = 53557198.

The previous prime is 53557183. The next prime is 53557211. The reversal of 53557199 is 99175535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53557199 - 2⁴ = 53557183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53557139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26778599 + 26778600.

It is an arithmetic number, because the mean of its divisors is an integer number (26778600).

Almost surely, 2^53557199 is an apocalyptic number.

53557199 is a deficient number, since it is larger than the sum of its proper divisors (1).

53557199 is an equidigital number, since it uses as much as digits as its factorization.

53557199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 212625, while the sum is 44.

The square root of 53557199 is about 7318.2784177701. The cubic root of 53557199 is about 376.9403405233.

It can be divided in two parts, 5355719 and 9, that multiplied together give a triangular number (48201471 = T₉₈₁₈).

The spelling of 53557199 in words is "fifty-three million, five hundred fifty-seven thousand, one hundred ninety-nine".