45491912 has 16 divisors (see below), whose sum is σ = 85384860. Its totient is φ = 22722624.

The previous prime is 45491903. The next prime is 45491917. The reversal of 45491912 is 21919454.

It can be written as a sum of positive squares in 2 ways, for example, as 44809636 + 682276 = 6694^2 + 826^2 .

It is not an unprimeable number, because it can be changed into a prime (45491917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7598 + ... + 12194.

Almost surely, 2^45491912 is an apocalyptic number.

It is an amenable number.

45491912 is a deficient number, since it is larger than the sum of its proper divisors (39892948).

45491912 is a wasteful number, since it uses less digits than its factorization.

45491912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840 (or 5836 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 45491912 is about 6744.7692325238. The cubic root of 45491912 is about 356.9806945022.

The spelling of 45491912 in words is "forty-five million, four hundred ninety-one thousand, nine hundred twelve".