48157731 has 12 divisors (see below), whose sum is σ = 70702320. Its totient is φ = 31578480.

The previous prime is 48157727. The next prime is 48157741. The reversal of 48157731 is 13775184.

48157731 is a `hidden beast` number, since 4 + 81 + 577 + 3 + 1 = 666.

It is not a de Polignac number, because 48157731 - 2² = 48157727 is a prime.

It is a super-2 number, since 2×48157731² = 4638334110136722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48157741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43311 + ... + 44408.

It is an arithmetic number, because the mean of its divisors is an integer number (5891860).

Almost surely, 2^48157731 is an apocalyptic number.

48157731 is a deficient number, since it is larger than the sum of its proper divisors (22544589).

48157731 is a wasteful number, since it uses less digits than its factorization.

48157731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87786 (or 87783 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 48157731 is about 6939.5771485012. The cubic root of 48157731 is about 363.8217614467.

The spelling of 48157731 in words is "forty-eight million, one hundred fifty-seven thousand, seven hundred thirty-one".