49121759 has 4 divisors (see below), whose sum is σ = 49332816. Its totient is φ = 48910704.

The previous prime is 49121749. The next prime is 49121777. The reversal of 49121759 is 95712194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49121759 - 2¹⁶ = 49056223 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 (49121749) 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, 105179 + ... + 105644.

It is an arithmetic number, because the mean of its divisors is an integer number (12333204).

Almost surely, 2^49121759 is an apocalyptic number.

49121759 is a deficient number, since it is larger than the sum of its proper divisors (211057).

49121759 is a wasteful number, since it uses less digits than its factorization.

49121759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211056.

The product of its digits is 22680, while the sum is 38.

The square root of 49121759 is about 7008.6916753414. The cubic root of 49121759 is about 366.2334178486.

The spelling of 49121759 in words is "forty-nine million, one hundred twenty-one thousand, seven hundred fifty-nine".