39157 has 2 divisors, whose sum is σ = 39158. Its totient is φ = 39156.

The previous prime is 39139. The next prime is 39161. The reversal of 39157 is 75193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37636 + 1521 = 194^2 + 39^2 .

It is an emirp because it is prime and its reverse (75193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39157 - 2¹⁵ = 6389 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19578 + 19579.

It is an arithmetic number, because the mean of its divisors is an integer number (19579).

2³⁹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

39157 is a deficient number, since it is larger than the sum of its proper divisors (1).

39157 is an equidigital number, since it uses as much as digits as its factorization.

39157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 25.

The square root of 39157 is about 197.8812775378. The cubic root of 39157 is about 33.9575595024.

It can be divided in two parts, 39 and 157, that added together give a square (196 = 14²).

The spelling of 39157 in words is "thirty-nine thousand, one hundred fifty-seven".