49997491 has 8 divisors (see below), whose sum is σ = 52059168. Its totient is φ = 47976000.

The previous prime is 49997489. The next prime is 49997501. The reversal of 49997491 is 19479994.

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

It is a cyclic number.

It is not a de Polignac number, because 49997491 - 2¹ = 49997489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49997411) 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 7 ways as a sum of consecutive naturals, for example, 7495 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (6507396).

Almost surely, 2^49997491 is an apocalyptic number.

49997491 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

49997491 is a deficient number, since it is larger than the sum of its proper divisors (2061677).

49997491 is a wasteful number, since it uses less digits than its factorization.

49997491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20093.

The product of its digits is 734832, while the sum is 52.

The square root of 49997491 is about 7070.8903965484. The cubic root of 49997491 is about 368.3969876043.

The spelling of 49997491 in words is "forty-nine million, nine hundred ninety-seven thousand, four hundred ninety-one".