53039993 has 2 divisors, whose sum is σ = 53039994. Its totient is φ = 53039992.

The previous prime is 53039989. The next prime is 53040023. The reversal of 53039993 is 39993035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52954729 + 85264 = 7277^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 53039993 - 2² = 53039989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53039993.

It is not a weakly prime, because it can be changed into another prime (53039933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26519996 + 26519997.

It is an arithmetic number, because the mean of its divisors is an integer number (26519997).

Almost surely, 2^53039993 is an apocalyptic number.

It is an amenable number.

53039993 is a deficient number, since it is larger than the sum of its proper divisors (1).

53039993 is an equidigital number, since it uses as much as digits as its factorization.

53039993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98415, while the sum is 41.

The square root of 53039993 is about 7282.8561018326. The cubic root of 53039993 is about 375.7230328851.

The spelling of 53039993 in words is "fifty-three million, thirty-nine thousand, nine hundred ninety-three".