45071945 has 16 divisors (see below), whose sum is σ = 56324160. Its totient is φ = 34582464.

The previous prime is 45071911. The next prime is 45071951. The reversal of 45071945 is 54917054.

It is a cyclic number.

It is not a de Polignac number, because 45071945 - 2¹⁴ = 45055561 is a prime.

It is a Curzon number.

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, 22682 + ... + 24588.

It is an arithmetic number, because the mean of its divisors is an integer number (3520260).

Almost surely, 2^45071945 is an apocalyptic number.

It is an amenable number.

45071945 is a deficient number, since it is larger than the sum of its proper divisors (11252215).

45071945 is a wasteful number, since it uses less digits than its factorization.

45071945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 45071945 is about 6713.5642545521. The cubic root of 45071945 is about 355.8787855851.

Adding to 45071945 its reverse (54917054), we get a palindrome (99988999).

The spelling of 45071945 in words is "forty-five million, seventy-one thousand, nine hundred forty-five".