49494645 has 20 divisors (see below), whose sum is σ = 88724460. Its totient is φ = 26396928.

The previous prime is 49494623. The next prime is 49494649. The reversal of 49494645 is 54649494.

It can be written as a sum of positive squares in 2 ways, for example, as 7387524 + 42107121 = 2718^2 + 6489^2 .

It is not a de Polignac number, because 49494645 - 2⁷ = 49494517 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 49494645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49494649) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 60700 + ... + 61509.

It is an arithmetic number, because the mean of its divisors is an integer number (4436223).

Almost surely, 2^49494645 is an apocalyptic number.

49494645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49494645 is a deficient number, since it is larger than the sum of its proper divisors (39229815).

49494645 is a wasteful number, since it uses less digits than its factorization.

49494645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122226 (or 122217 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 49494645 is about 7035.2430661634. The cubic root of 49494645 is about 367.1577822154.

The spelling of 49494645 in words is "forty-nine million, four hundred ninety-four thousand, six hundred forty-five".