53118157 has 2 divisors, whose sum is σ = 53118158. Its totient is φ = 53118156.

The previous prime is 53118139. The next prime is 53118161. The reversal of 53118157 is 75181135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32787076 + 20331081 = 5726^2 + 4509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53118157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53118127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26559078 + 26559079.

It is an arithmetic number, because the mean of its divisors is an integer number (26559079).

Almost surely, 2^53118157 is an apocalyptic number.

It is an amenable number.

53118157 is a deficient number, since it is larger than the sum of its proper divisors (1).

53118157 is an equidigital number, since it uses as much as digits as its factorization.

53118157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 31.

The square root of 53118157 is about 7288.2204275118. The cubic root of 53118157 is about 375.9075075235.

The spelling of 53118157 in words is "fifty-three million, one hundred eighteen thousand, one hundred fifty-seven".