49918751 has 4 divisors (see below), whose sum is σ = 50621904. Its totient is φ = 49215600.

The previous prime is 49918741. The next prime is 49918769. The reversal of 49918751 is 15781994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15781994 = 2 ⋅7890997.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49918751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49918721) 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 3 ways as a sum of consecutive naturals, for example, 351470 + ... + 351611.

It is an arithmetic number, because the mean of its divisors is an integer number (12655476).

Almost surely, 2^49918751 is an apocalyptic number.

49918751 is a deficient number, since it is larger than the sum of its proper divisors (703153).

49918751 is an equidigital number, since it uses as much as digits as its factorization.

49918751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703152.

The product of its digits is 90720, while the sum is 44.

The square root of 49918751 is about 7065.3203041334. The cubic root of 49918751 is about 368.2034924284.

The spelling of 49918751 in words is "forty-nine million, nine hundred eighteen thousand, seven hundred fifty-one".