49997518 has 8 divisors (see below), whose sum is σ = 75159648. Its totient is φ = 24944304.

The previous prime is 49997509. The next prime is 49997567. The reversal of 49997518 is 81579994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26071 + ... + 27922.

It is an arithmetic number, because the mean of its divisors is an integer number (9394956).

Almost surely, 2^49997518 is an apocalyptic number.

49997518 is a deficient number, since it is larger than the sum of its proper divisors (25162130).

49997518 is a wasteful number, since it uses less digits than its factorization.

49997518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54458.

The product of its digits is 816480, while the sum is 52.

The square root of 49997518 is about 7070.8923057843. The cubic root of 49997518 is about 368.3970539191.

The spelling of 49997518 in words is "forty-nine million, nine hundred ninety-seven thousand, five hundred eighteen".