49161 has 8 divisors (see below), whose sum is σ = 74944. Its totient is φ = 28080.

The previous prime is 49157. The next prime is 49169. The reversal of 49161 is 16194.

49161 = T₁₁₅ + T₁₁₆ + ... + T₁₂₁.

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

It is not a de Polignac number, because 49161 - 2² = 49157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2341 = 49161 / (4 + 9 + 1 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (49169) 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, 1150 + ... + 1191.

It is an arithmetic number, because the mean of its divisors is an integer number (9368).

2⁴⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

49161 is a deficient number, since it is larger than the sum of its proper divisors (25783).

49161 is a wasteful number, since it uses less digits than its factorization.

49161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 216, while the sum is 21.

The square root of 49161 is about 221.7227999102. The cubic root of 49161 is about 36.6330913953.

It can be divided in two parts, 49 and 161, that added together give a triangular number (210 = T₂₀).

The spelling of 49161 in words is "forty-nine thousand, one hundred sixty-one".