49991158 has 32 divisors (see below), whose sum is σ = 89026560. Its totient is φ = 20602080.

The previous prime is 49991143. The next prime is 49991159. The reversal of 49991158 is 85119994.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49991159) 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, 99135 + ... + 99637.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^49991158 is an apocalyptic number.

49991158 is a deficient number, since it is larger than the sum of its proper divisors (39035402).

49991158 is a wasteful number, since it uses less digits than its factorization.

49991158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its digits is 116640, while the sum is 46.

The square root of 49991158 is about 7070.4425604060. The cubic root of 49991158 is about 368.3814324461.

The spelling of 49991158 in words is "forty-nine million, nine hundred ninety-one thousand, one hundred fifty-eight".