45149672 has 8 divisors (see below), whose sum is σ = 84655650. Its totient is φ = 22574832.

The previous prime is 45149669. The next prime is 45149677. The reversal of 45149672 is 27694154.

It can be written as a sum of positive squares in only one way, i.e., 39513796 + 5635876 = 6286^2 + 2374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (45149677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821847 + ... + 2821862.

Almost surely, 2^45149672 is an apocalyptic number.

It is an amenable number.

45149672 is a deficient number, since it is larger than the sum of its proper divisors (39505978).

45149672 is a wasteful number, since it uses less digits than its factorization.

45149672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643715 (or 5643711 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 45149672 is about 6719.3505638566. The cubic root of 45149672 is about 356.0832402246.

The spelling of 45149672 in words is "forty-five million, one hundred forty-nine thousand, six hundred seventy-two".