49817145 has 32 divisors (see below), whose sum is σ = 95892480. Its totient is φ = 21574080.

The previous prime is 49817143. The next prime is 49817153. The reversal of 49817145 is 54171894.

49817145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49817145 - 2¹ = 49817143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49817143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10491 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (2996640).

Almost surely, 2^49817145 is an apocalyptic number.

It is an amenable number.

49817145 is a deficient number, since it is larger than the sum of its proper divisors (46075335).

49817145 is a wasteful number, since it uses less digits than its factorization.

49817145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25005.

The product of its digits is 40320, while the sum is 39.

The square root of 49817145 is about 7058.1261677587. The cubic root of 49817145 is about 367.9535055666.

The spelling of 49817145 in words is "forty-nine million, eight hundred seventeen thousand, one hundred forty-five".