49781131 has 8 divisors (see below), whose sum is σ = 53051904. Its totient is φ = 46602600.

The previous prime is 49781113. The next prime is 49781161. The reversal of 49781131 is 13118794.

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

It is not a de Polignac number, because 49781131 - 2⁷ = 49781003 is a prime.

It is a super-2 number, since 2×49781131² = 4956322007278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49781111) 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, 21945 + ... + 24106.

It is an arithmetic number, because the mean of its divisors is an integer number (6631488).

Almost surely, 2^49781131 is an apocalyptic number.

49781131 is a deficient number, since it is larger than the sum of its proper divisors (3270773).

49781131 is a wasteful number, since it uses less digits than its factorization.

49781131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46121.

The product of its digits is 6048, while the sum is 34.

The square root of 49781131 is about 7055.5744627918. The cubic root of 49781131 is about 367.8648167420.

The spelling of 49781131 in words is "forty-nine million, seven hundred eighty-one thousand, one hundred thirty-one".