49649137 has 2 divisors, whose sum is σ = 49649138. Its totient is φ = 49649136.

The previous prime is 49649101. The next prime is 49649141. The reversal of 49649137 is 73194694.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27029601 + 22619536 = 5199^2 + 4756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49649137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49649093 and 49649102.

It is not a weakly prime, because it can be changed into another prime (49649167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24824568 + 24824569.

It is an arithmetic number, because the mean of its divisors is an integer number (24824569).

Almost surely, 2^49649137 is an apocalyptic number.

It is an amenable number.

49649137 is a deficient number, since it is larger than the sum of its proper divisors (1).

49649137 is an equidigital number, since it uses as much as digits as its factorization.

49649137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 49649137 is about 7046.2143736903. The cubic root of 49649137 is about 367.5393994194.

The spelling of 49649137 in words is "forty-nine million, six hundred forty-nine thousand, one hundred thirty-seven".