53188789 has 2 divisors, whose sum is σ = 53188790. Its totient is φ = 53188788.

The previous prime is 53188781. The next prime is 53188823. The reversal of 53188789 is 98788135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31640625 + 21548164 = 5625^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 53188789 - 2³ = 53188781 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 (53188781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26594394 + 26594395.

It is an arithmetic number, because the mean of its divisors is an integer number (26594395).

Almost surely, 2^53188789 is an apocalyptic number.

It is an amenable number.

53188789 is a deficient number, since it is larger than the sum of its proper divisors (1).

53188789 is an equidigital number, since it uses as much as digits as its factorization.

53188789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The square root of 53188789 is about 7293.0644450738. The cubic root of 53188789 is about 376.0740503203.

The spelling of 53188789 in words is "fifty-three million, one hundred eighty-eight thousand, seven hundred eighty-nine".