49157157 has 16 divisors (see below), whose sum is σ = 75019392. Its totient is φ = 28047360.

The previous prime is 49157153. The next prime is 49157177. The reversal of 49157157 is 75175194.

It is not a de Polignac number, because 49157157 - 2² = 49157153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49157153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17173 + ... + 19829.

It is an arithmetic number, because the mean of its divisors is an integer number (4688712).

Almost surely, 2^49157157 is an apocalyptic number.

It is an amenable number.

49157157 is a deficient number, since it is larger than the sum of its proper divisors (25862235).

49157157 is a wasteful number, since it uses less digits than its factorization.

49157157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548.

The product of its digits is 44100, while the sum is 39.

The square root of 49157157 is about 7011.2165135588. The cubic root of 49157157 is about 366.3213681312.

The spelling of 49157157 in words is "forty-nine million, one hundred fifty-seven thousand, one hundred fifty-seven".