49017145 has 4 divisors (see below), whose sum is σ = 58820580. Its totient is φ = 39213712.

The previous prime is 49017121. The next prime is 49017149. The reversal of 49017145 is 54171094.

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 24840256 + 24176889 = 4984^2 + 4917^2 .

It is a cyclic number.

It is not a de Polignac number, because 49017145 - 2⁹ = 49016633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49017149) 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, 4901710 + ... + 4901719.

It is an arithmetic number, because the mean of its divisors is an integer number (14705145).

Almost surely, 2^49017145 is an apocalyptic number.

It is an amenable number.

49017145 is a deficient number, since it is larger than the sum of its proper divisors (9803435).

49017145 is an equidigital number, since it uses as much as digits as its factorization.

49017145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9803434.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 49017145 is about 7001.2245357509. The cubic root of 49017145 is about 365.9732454788.

The spelling of 49017145 in words is "forty-nine million, seventeen thousand, one hundred forty-five".