49172173 has 2 divisors, whose sum is σ = 49172174. Its totient is φ = 49172172.

The previous prime is 49172147. The next prime is 49172191. The reversal of 49172173 is 37127194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41757444 + 7414729 = 6462^2 + 2723^2 .

It is a cyclic number.

It is not a de Polignac number, because 49172173 - 2¹³ = 49163981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49172273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24586086 + 24586087.

It is an arithmetic number, because the mean of its divisors is an integer number (24586087).

Almost surely, 2^49172173 is an apocalyptic number.

It is an amenable number.

49172173 is a deficient number, since it is larger than the sum of its proper divisors (1).

49172173 is an equidigital number, since it uses as much as digits as its factorization.

49172173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 49172173 is about 7012.2872873264. The cubic root of 49172173 is about 366.3586643053.

The spelling of 49172173 in words is "forty-nine million, one hundred seventy-two thousand, one hundred seventy-three".