49742557 has 2 divisors, whose sum is σ = 49742558. Its totient is φ = 49742556.

The previous prime is 49742543. The next prime is 49742599. The reversal of 49742557 is 75524794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45441081 + 4301476 = 6741^2 + 2074^2 .

It is a cyclic number.

It is not a de Polignac number, because 49742557 - 2¹⁹ = 49218269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49742257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24871278 + 24871279.

It is an arithmetic number, because the mean of its divisors is an integer number (24871279).

Almost surely, 2^49742557 is an apocalyptic number.

It is an amenable number.

49742557 is a deficient number, since it is larger than the sum of its proper divisors (1).

49742557 is an equidigital number, since it uses as much as digits as its factorization.

49742557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 49742557 is about 7052.8403498165. The cubic root of 49742557 is about 367.7697761521.

The spelling of 49742557 in words is "forty-nine million, seven hundred forty-two thousand, five hundred fifty-seven".