49779173 has 2 divisors, whose sum is σ = 49779174. Its totient is φ = 49779172.

The previous prime is 49779049. The next prime is 49779181. The reversal of 49779173 is 37197794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39526369 + 10252804 = 6287^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 49779173 - 2²⁴ = 33001957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49779673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24889586 + 24889587.

It is an arithmetic number, because the mean of its divisors is an integer number (24889587).

Almost surely, 2^49779173 is an apocalyptic number.

It is an amenable number.

49779173 is a deficient number, since it is larger than the sum of its proper divisors (1).

49779173 is an equidigital number, since it uses as much as digits as its factorization.

49779173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 49779173 is about 7055.4357058937. The cubic root of 49779173 is about 367.8599937047.

The spelling of 49779173 in words is "forty-nine million, seven hundred seventy-nine thousand, one hundred seventy-three".