49789251 has 12 divisors (see below), whose sum is σ = 72006480. Its totient is φ = 33151920.

The previous prime is 49789249. The next prime is 49789261. The reversal of 49789251 is 15298794.

It is not a de Polignac number, because 49789251 - 2¹ = 49789249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49789197 and 49789206.

It is not an unprimeable number, because it can be changed into a prime (49789231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5530 + ... + 11408.

It is an arithmetic number, because the mean of its divisors is an integer number (6000540).

Almost surely, 2^49789251 is an apocalyptic number.

49789251 is a deficient number, since it is larger than the sum of its proper divisors (22217229).

49789251 is a wasteful number, since it uses less digits than its factorization.

49789251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826 (or 6823 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 49789251 is about 7056.1498708573. The cubic root of 49789251 is about 367.8848169567.

The spelling of 49789251 in words is "forty-nine million, seven hundred eighty-nine thousand, two hundred fifty-one".