49559991 has 16 divisors (see below), whose sum is σ = 71363040. Its totient is φ = 30412800.

The previous prime is 49559977. The next prime is 49560013. The reversal of 49559991 is 19995594.

It is a happy number.

It is not a de Polignac number, because 49559991 - 2⁵ = 49559959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49559921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14055 + ... + 17223.

It is an arithmetic number, because the mean of its divisors is an integer number (4460190).

Almost surely, 2^49559991 is an apocalyptic number.

49559991 is a deficient number, since it is larger than the sum of its proper divisors (21803049).

49559991 is a wasteful number, since it uses less digits than its factorization.

49559991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586.

The product of its digits is 656100, while the sum is 51.

The square root of 49559991 is about 7039.8857235043. The cubic root of 49559991 is about 367.3192928964.

The spelling of 49559991 in words is "forty-nine million, five hundred fifty-nine thousand, nine hundred ninety-one".