15161957 has 2 divisors, whose sum is σ = 15161958. Its totient is φ = 15161956.

The previous prime is 15161947. The next prime is 15161959. The reversal of 15161957 is 75916151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15124321 + 37636 = 3889^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 15161957 - 2¹⁴ = 15145573 is a prime.

Together with 15161959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15161959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7580978 + 7580979.

It is an arithmetic number, because the mean of its divisors is an integer number (7580979).

Almost surely, 2^15161957 is an apocalyptic number.

It is an amenable number.

15161957 is a deficient number, since it is larger than the sum of its proper divisors (1).

15161957 is an equidigital number, since it uses as much as digits as its factorization.

15161957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 35.

The square root of 15161957 is about 3893.8357695208. The cubic root of 15161957 is about 247.5056326304.

The spelling of 15161957 in words is "fifteen million, one hundred sixty-one thousand, nine hundred fifty-seven".