45489971 has 6 divisors (see below), whose sum is σ = 48010572. Its totient is φ = 43095420.

The previous prime is 45489959. The next prime is 45489973. The reversal of 45489971 is 17998454.

It is not a de Polignac number, because 45489971 - 2¹⁴ = 45473587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45489973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62645 + ... + 63366.

It is an arithmetic number, because the mean of its divisors is an integer number (8001762).

Almost surely, 2^45489971 is an apocalyptic number.

45489971 is a deficient number, since it is larger than the sum of its proper divisors (2520601).

45489971 is a wasteful number, since it uses less digits than its factorization.

45489971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126049 (or 126030 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 45489971 is about 6744.6253417073. The cubic root of 45489971 is about 356.9756173405.

The spelling of 45489971 in words is "forty-five million, four hundred eighty-nine thousand, nine hundred seventy-one".