49901161 has 4 divisors (see below), whose sum is σ = 50119300. Its totient is φ = 49683024.

The previous prime is 49901149. The next prime is 49901167. The reversal of 49901161 is 16110994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25694761 + 24206400 = 5069^2 + 4920^2 .

It is a cyclic number.

It is not a de Polignac number, because 49901161 - 2¹⁷ = 49770089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49901167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108726 + ... + 109183.

It is an arithmetic number, because the mean of its divisors is an integer number (12529825).

Almost surely, 2^49901161 is an apocalyptic number.

It is an amenable number.

49901161 is a deficient number, since it is larger than the sum of its proper divisors (218139).

49901161 is a wasteful number, since it uses less digits than its factorization.

49901161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218138.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 49901161 is about 7064.0753818175. The cubic root of 49901161 is about 368.1602390737.

The spelling of 49901161 in words is "forty-nine million, nine hundred one thousand, one hundred sixty-one".