45472149 has 24 divisors (see below), whose sum is σ = 71017440. Its totient is φ = 27939168.

The previous prime is 45472139. The next prime is 45472159. The reversal of 45472149 is 94127454.

It is a happy number.

45472149 is a `hidden beast` number, since 45 + 472 + 149 = 666.

It is an interprime number because it is at equal distance from previous prime (45472139) and next prime (45472159).

It is not a de Polignac number, because 45472149 - 2⁵ = 45472117 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45472109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2734 + ... + 9920.

It is an arithmetic number, because the mean of its divisors is an integer number (2959060).

Almost surely, 2^45472149 is an apocalyptic number.

It is an amenable number.

45472149 is a deficient number, since it is larger than the sum of its proper divisors (25545291).

45472149 is a wasteful number, since it uses less digits than its factorization.

45472149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249 (or 7246 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 45472149 is about 6743.3040121294. The cubic root of 45472149 is about 356.9289927745.

The spelling of 45472149 in words is "forty-five million, four hundred seventy-two thousand, one hundred forty-nine".