49619745 has 24 divisors (see below), whose sum is σ = 98294976. Its totient is φ = 22683168.

The previous prime is 49619723. The next prime is 49619749. The reversal of 49619745 is 54791694.

It is not a de Polignac number, because 49619745 - 2⁶ = 49619681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 49619745.

It is not an unprimeable number, because it can be changed into a prime (49619749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78447 + ... + 79076.

It is an arithmetic number, because the mean of its divisors is an integer number (4095624).

Almost surely, 2^49619745 is an apocalyptic number.

49619745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49619745 is a deficient number, since it is larger than the sum of its proper divisors (48675231).

49619745 is a wasteful number, since it uses less digits than its factorization.

49619745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157541 (or 157538 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 49619745 is about 7044.1284059847. The cubic root of 49619745 is about 367.4668580414.

It can be divided in two parts, 4961 and 9745, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 49619745 in words is "forty-nine million, six hundred nineteen thousand, seven hundred forty-five".