49499557 has 4 divisors (see below), whose sum is σ = 49515136. Its totient is φ = 49483980.

The previous prime is 49499551. The next prime is 49499581. The reversal of 49499557 is 75599494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49499557 is a prime.

It is a super-2 number, since 2×49499557² = 4900412286392498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49499551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119 + ... + 10012.

It is an arithmetic number, because the mean of its divisors is an integer number (12378784).

Almost surely, 2^49499557 is an apocalyptic number.

It is an amenable number.

49499557 is a deficient number, since it is larger than the sum of its proper divisors (15579).

49499557 is a wasteful number, since it uses less digits than its factorization.

49499557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15578.

The product of its digits is 2041200, while the sum is 52.

The square root of 49499557 is about 7035.5921570256. The cubic root of 49499557 is about 367.1699277675.

The spelling of 49499557 in words is "forty-nine million, four hundred ninety-nine thousand, five hundred fifty-seven".