49815149 has 2 divisors, whose sum is σ = 49815150. Its totient is φ = 49815148.

The previous prime is 49815137. The next prime is 49815173. The reversal of 49815149 is 94151894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 16752649 = 5750^2 + 4093^2 .

It is a cyclic number.

It is not a de Polignac number, because 49815149 - 2⁴ = 49815133 is a prime.

It is a Chen prime.

It is equal to p_2990687 and since 49815149 and 2990687 have the same sum of digits, it is a Honaker prime.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 24907574 + 24907575.

It is an arithmetic number, because the mean of its divisors is an integer number (24907575).

Almost surely, 2^49815149 is an apocalyptic number.

It is an amenable number.

49815149 is a deficient number, since it is larger than the sum of its proper divisors (1).

49815149 is an equidigital number, since it uses as much as digits as its factorization.

49815149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 49815149 is about 7057.9847690400. The cubic root of 49815149 is about 367.9485912946.

The spelling of 49815149 in words is "forty-nine million, eight hundred fifteen thousand, one hundred forty-nine".