49161531 has 8 divisors (see below), whose sum is σ = 68998720. Its totient is φ = 31049352.

The previous prime is 49161527. The next prime is 49161559. The reversal of 49161531 is 13516194.

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

It is not a de Polignac number, because 49161531 - 2² = 49161527 is a prime.

It is a super-2 number, since 2×49161531² = 4833712260527922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49161131) 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, 431185 + ... + 431298.

It is an arithmetic number, because the mean of its divisors is an integer number (8624840).

Almost surely, 2^49161531 is an apocalyptic number.

49161531 is a deficient number, since it is larger than the sum of its proper divisors (19837189).

49161531 is a wasteful number, since it uses less digits than its factorization.

49161531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862505.

The product of its digits is 3240, while the sum is 30.

The square root of 49161531 is about 7011.5284353699. The cubic root of 49161531 is about 366.3322328912.

The spelling of 49161531 in words is "forty-nine million, one hundred sixty-one thousand, five hundred thirty-one".