49217873 has 4 divisors (see below), whose sum is σ = 52113060. Its totient is φ = 46322688.

The previous prime is 49217851. The next prime is 49217893. The reversal of 49217873 is 37871294.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39589264 + 9628609 = 6292^2 + 3103^2 .

It is a de Polignac number, because none of the positive numbers 2^k-49217873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49217873.

It is not an unprimeable number, because it can be changed into a prime (49217893) 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, 1447568 + ... + 1447601.

It is an arithmetic number, because the mean of its divisors is an integer number (13028265).

Almost surely, 2^49217873 is an apocalyptic number.

It is an amenable number.

49217873 is a deficient number, since it is larger than the sum of its proper divisors (2895187).

49217873 is a wasteful number, since it uses less digits than its factorization.

49217873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895186.

The product of its digits is 84672, while the sum is 41.

The square root of 49217873 is about 7015.5450964269. The cubic root of 49217873 is about 366.4721255432.

The spelling of 49217873 in words is "forty-nine million, two hundred seventeen thousand, eight hundred seventy-three".