49981751 has 8 divisors (see below), whose sum is σ = 53115264. Its totient is φ = 46869760.

The previous prime is 49981699. The next prime is 49981787. The reversal of 49981751 is 15718994.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49981751 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 (49911751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455 + ... + 10008.

It is an arithmetic number, because the mean of its divisors is an integer number (6639408).

Almost surely, 2^49981751 is an apocalyptic number.

49981751 is a deficient number, since it is larger than the sum of its proper divisors (3133513).

49981751 is a wasteful number, since it uses less digits than its factorization.

49981751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10761.

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

The square root of 49981751 is about 7069.7772949365. Note that the first 3 decimals coincide. The cubic root of 49981751 is about 368.3583244829.

The spelling of 49981751 in words is "forty-nine million, nine hundred eighty-one thousand, seven hundred fifty-one".