49515289 has 4 divisors (see below), whose sum is σ = 49561524. Its totient is φ = 49469056.

The previous prime is 49515281. The next prime is 49515307. The reversal of 49515289 is 98251594.

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 10240000 + 39275289 = 3200^2 + 6267^2 .

It is a cyclic number.

It is not a de Polignac number, because 49515289 - 2³ = 49515281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49515281) 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, 21472 + ... + 23665.

It is an arithmetic number, because the mean of its divisors is an integer number (12390381).

Almost surely, 2^49515289 is an apocalyptic number.

It is an amenable number.

49515289 is a deficient number, since it is larger than the sum of its proper divisors (46235).

49515289 is a wasteful number, since it uses less digits than its factorization.

49515289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46234.

The product of its digits is 129600, while the sum is 43.

The square root of 49515289 is about 7036.7100977659. The cubic root of 49515289 is about 367.2088217551.

The spelling of 49515289 in words is "forty-nine million, five hundred fifteen thousand, two hundred eighty-nine".