49739557 has 6 divisors (see below), whose sum is σ = 57860358. Its totient is φ = 42633864.

The previous prime is 49739539. The next prime is 49739561. The reversal of 49739557 is 75593794.

It can be written as a sum of positive squares in only one way, i.e., 38118276 + 11621281 = 6174^2 + 3409^2 .

It is not a de Polignac number, because 49739557 - 2⁷ = 49739429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1015093 = 49739557 / (4 + 9 + 7 + 3 + 9 + 5 + 5 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49739557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49739857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507498 + ... + 507595.

It is an arithmetic number, because the mean of its divisors is an integer number (9643393).

Almost surely, 2^49739557 is an apocalyptic number.

It is an amenable number.

49739557 is a deficient number, since it is larger than the sum of its proper divisors (8120801).

49739557 is a wasteful number, since it uses less digits than its factorization.

49739557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015107 (or 1015100 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 49.

The square root of 49739557 is about 7052.6276663383. The cubic root of 49739557 is about 367.7623825400.

The spelling of 49739557 in words is "forty-nine million, seven hundred thirty-nine thousand, five hundred fifty-seven".