49157 has 2 divisors, whose sum is σ = 49158. Its totient is φ = 49156.

The previous prime is 49139. The next prime is 49169. The reversal of 49157 is 75194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43681 + 5476 = 209^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 49157 - 2¹² = 45061 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24578 + 24579.

It is an arithmetic number, because the mean of its divisors is an integer number (24579).

2⁴⁹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

49157 is a deficient number, since it is larger than the sum of its proper divisors (1).

49157 is an equidigital number, since it uses as much as digits as its factorization.

49157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 49157 is about 221.7137794545. The cubic root of 49157 is about 36.6320978140.

The spelling of 49157 in words is "forty-nine thousand, one hundred fifty-seven".