49986531 has 32 divisors (see below), whose sum is σ = 85816320. Its totient is φ = 28164672.

The previous prime is 49986529. The next prime is 49986553. The reversal of 49986531 is 13568994.

It is a happy number.

It is not a de Polignac number, because 49986531 - 2¹ = 49986529 is a prime.

It is a super-2 number, since 2×49986531² = 4997306562827922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49986581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11986 + ... + 15608.

It is an arithmetic number, because the mean of its divisors is an integer number (2681760).

Almost surely, 2^49986531 is an apocalyptic number.

49986531 is a deficient number, since it is larger than the sum of its proper divisors (35829789).

49986531 is a wasteful number, since it uses less digits than its factorization.

49986531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712 (or 3706 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 49986531 is about 7070.1153455937. The cubic root of 49986531 is about 368.3700667464.

The spelling of 49986531 in words is "forty-nine million, nine hundred eighty-six thousand, five hundred thirty-one".