49615729 has 2 divisors, whose sum is σ = 49615730. Its totient is φ = 49615728.

The previous prime is 49615697. The next prime is 49615747. The reversal of 49615729 is 92751694.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38725729 + 10890000 = 6223^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 49615729 - 2⁵ = 49615697 is a prime.

It is not a weakly prime, because it can be changed into another prime (49615229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24807864 + 24807865.

It is an arithmetic number, because the mean of its divisors is an integer number (24807865).

Almost surely, 2^49615729 is an apocalyptic number.

It is an amenable number.

49615729 is a deficient number, since it is larger than the sum of its proper divisors (1).

49615729 is an equidigital number, since it uses as much as digits as its factorization.

49615729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 49615729 is about 7043.8433401091. The cubic root of 49615729 is about 367.4569440665.

The spelling of 49615729 in words is "forty-nine million, six hundred fifteen thousand, seven hundred twenty-nine".