53223557 has 2 divisors, whose sum is σ = 53223558. Its totient is φ = 53223556.

The previous prime is 53223553. The next prime is 53223563. The reversal of 53223557 is 75532235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52911076 + 312481 = 7274^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 53223557 - 2² = 53223553 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 (53223553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26611778 + 26611779.

It is an arithmetic number, because the mean of its divisors is an integer number (26611779).

Almost surely, 2^53223557 is an apocalyptic number.

It is an amenable number.

53223557 is a deficient number, since it is larger than the sum of its proper divisors (1).

53223557 is an equidigital number, since it uses as much as digits as its factorization.

53223557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500, while the sum is 32.

The square root of 53223557 is about 7295.4476901695. The cubic root of 53223557 is about 376.1559754457.

The spelling of 53223557 in words is "fifty-three million, two hundred twenty-three thousand, five hundred fifty-seven".