49149173 has 2 divisors, whose sum is σ = 49149174. Its totient is φ = 49149172.

The previous prime is 49149157. The next prime is 49149203. The reversal of 49149173 is 37194194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48762289 + 386884 = 6983^2 + 622^2 .

It is a cyclic number.

It is not a de Polignac number, because 49149173 - 2⁴ = 49149157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49149673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24574586 + 24574587.

It is an arithmetic number, because the mean of its divisors is an integer number (24574587).

Almost surely, 2^49149173 is an apocalyptic number.

It is an amenable number.

49149173 is a deficient number, since it is larger than the sum of its proper divisors (1).

49149173 is an equidigital number, since it uses as much as digits as its factorization.

49149173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 49149173 is about 7010.6471170642. The cubic root of 49149173 is about 366.3015346804.

The spelling of 49149173 in words is "forty-nine million, one hundred forty-nine thousand, one hundred seventy-three".