49815173 has 2 divisors, whose sum is σ = 49815174. Its totient is φ = 49815172.

The previous prime is 49815149. The next prime is 49815179. The reversal of 49815173 is 37151894.

49815173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 13924 = 7057^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 49815173 - 2¹⁴ = 49798789 is a prime.

It is a super-2 number, since 2×49815173² = 4963102922039858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49815179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24907586 + 24907587.

It is an arithmetic number, because the mean of its divisors is an integer number (24907587).

Almost surely, 2^49815173 is an apocalyptic number.

It is an amenable number.

49815173 is a deficient number, since it is larger than the sum of its proper divisors (1).

49815173 is an equidigital number, since it uses as much as digits as its factorization.

49815173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 49815173 is about 7057.9864692418. The cubic root of 49815173 is about 367.9486503848.

The spelling of 49815173 in words is "forty-nine million, eight hundred fifteen thousand, one hundred seventy-three".