49920157 has 8 divisors (see below), whose sum is σ = 58265856. Its totient is φ = 41878032.

The previous prime is 49920139. The next prime is 49920161. The reversal of 49920157 is 75102994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49920157 - 2¹⁵ = 49887389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49920127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75538 + ... + 76195.

It is an arithmetic number, because the mean of its divisors is an integer number (7283232).

Almost surely, 2^49920157 is an apocalyptic number.

49920157 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

49920157 is a deficient number, since it is larger than the sum of its proper divisors (8345699).

49920157 is a wasteful number, since it uses less digits than its factorization.

49920157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151787.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 49920157 is about 7065.4198035219. The cubic root of 49920157 is about 368.2069493074.

The spelling of 49920157 in words is "forty-nine million, nine hundred twenty thousand, one hundred fifty-seven".