53140993 has 2 divisors, whose sum is σ = 53140994. Its totient is φ = 53140992.

The previous prime is 53140987. The next prime is 53141041. The reversal of 53140993 is 39904135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34374769 + 18766224 = 5863^2 + 4332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53140993 is a prime.

It is not a weakly prime, because it can be changed into another prime (53140193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26570496 + 26570497.

It is an arithmetic number, because the mean of its divisors is an integer number (26570497).

Almost surely, 2^53140993 is an apocalyptic number.

It is an amenable number.

53140993 is a deficient number, since it is larger than the sum of its proper divisors (1).

53140993 is an equidigital number, since it uses as much as digits as its factorization.

53140993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 53140993 is about 7289.7868967481. The cubic root of 53140993 is about 375.9613685412.

The spelling of 53140993 in words is "fifty-three million, one hundred forty thousand, nine hundred ninety-three".