49015121 has 4 divisors (see below), whose sum is σ = 50339892. Its totient is φ = 47690352.

The previous prime is 49015103. The next prime is 49015129. The reversal of 49015121 is 12151094.

It is a happy number.

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 24611521 + 24403600 = 4961^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 49015121 - 2¹⁴ = 48998737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49015129) 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, 662330 + ... + 662403.

It is an arithmetic number, because the mean of its divisors is an integer number (12584973).

Almost surely, 2^49015121 is an apocalyptic number.

It is an amenable number.

49015121 is a deficient number, since it is larger than the sum of its proper divisors (1324771).

49015121 is a wasteful number, since it uses less digits than its factorization.

49015121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324770.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 49015121 is about 7001.0799881161. The cubic root of 49015121 is about 365.9682081934.

The spelling of 49015121 in words is "forty-nine million, fifteen thousand, one hundred twenty-one".