49999145 has 16 divisors (see below), whose sum is σ = 68688000. Its totient is φ = 34226304.

The previous prime is 49999133. The next prime is 49999151. The reversal of 49999145 is 54199994.

It is not a de Polignac number, because 49999145 - 2²⁰ = 48950569 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 49999093 and 49999102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32606 + ... + 34104.

It is an arithmetic number, because the mean of its divisors is an integer number (4293000).

Almost surely, 2^49999145 is an apocalyptic number.

It is an amenable number.

49999145 is a deficient number, since it is larger than the sum of its proper divisors (18688855).

49999145 is a wasteful number, since it uses less digits than its factorization.

49999145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464.

The product of its digits is 524880, while the sum is 50.

The square root of 49999145 is about 7071.0073539772. The cubic root of 49999145 is about 368.4010499541.

The spelling of 49999145 in words is "forty-nine million, nine hundred ninety-nine thousand, one hundred forty-five".