49281945 has 16 divisors (see below), whose sum is σ = 79200960. Its totient is φ = 26167104.

The previous prime is 49281943. The next prime is 49281983. The reversal of 49281945 is 54918294.

It is not a de Polignac number, because 49281945 - 2¹ = 49281943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49281897 and 49281906.

It is not an unprimeable number, because it can be changed into a prime (49281943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3739 + ... + 10608.

It is an arithmetic number, because the mean of its divisors is an integer number (4950060).

Almost surely, 2^49281945 is an apocalyptic number.

It is an amenable number.

49281945 is a deficient number, since it is larger than the sum of its proper divisors (29919015).

49281945 is a wasteful number, since it uses less digits than its factorization.

49281945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14584.

The product of its digits is 103680, while the sum is 42.

The square root of 49281945 is about 7020.1100418726. The cubic root of 49281945 is about 366.6310814869.

The spelling of 49281945 in words is "forty-nine million, two hundred eighty-one thousand, nine hundred forty-five".