49268721 has 4 divisors (see below), whose sum is σ = 65691632. Its totient is φ = 32845812.

The previous prime is 49268683. The next prime is 49268731. The reversal of 49268721 is 12786294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 49268721 - 2⁶ = 49268657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49268721.

It is not an unprimeable number, because it can be changed into a prime (49268731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8211451 + ... + 8211456.

It is an arithmetic number, because the mean of its divisors is an integer number (16422908).

Almost surely, 2^49268721 is an apocalyptic number.

It is an amenable number.

49268721 is a deficient number, since it is larger than the sum of its proper divisors (16422911).

49268721 is a wasteful number, since it uses less digits than its factorization.

49268721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16422910.

The product of its digits is 48384, while the sum is 39.

The square root of 49268721 is about 7019.1681131029. The cubic root of 49268721 is about 366.5982854115.

The spelling of 49268721 in words is "forty-nine million, two hundred sixty-eight thousand, seven hundred twenty-one".