49221945 has 16 divisors (see below), whose sum is σ = 87505920. Its totient is φ = 26251632.

The previous prime is 49221943. The next prime is 49222007. The reversal of 49221945 is 54912294.

It is not a de Polignac number, because 49221945 - 2¹ = 49221943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49221943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182169 + ... + 182438.

It is an arithmetic number, because the mean of its divisors is an integer number (5469120).

Almost surely, 2^49221945 is an apocalyptic number.

49221945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49221945 is a deficient number, since it is larger than the sum of its proper divisors (38283975).

49221945 is a wasteful number, since it uses less digits than its factorization.

49221945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364621 (or 364615 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 49221945 is about 7015.8353030840. The cubic root of 49221945 is about 366.4822318538.

The spelling of 49221945 in words is "forty-nine million, two hundred twenty-one thousand, nine hundred forty-five".