45199665 has 96 divisors (see below), whose sum is σ = 94887936. Its totient is φ = 19474560.

The previous prime is 45199663. The next prime is 45199717. The reversal of 45199665 is 56699154.

It is a happy number.

It is not a de Polignac number, because 45199665 - 2¹ = 45199663 is a prime.

It is a super-2 number, since 2×45199665² = 4086019432224450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 45199665.

It is not an unprimeable number, because it can be changed into a prime (45199663) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 636580 + ... + 636650.

It is an arithmetic number, because the mean of its divisors is an integer number (988416).

Almost surely, 2^45199665 is an apocalyptic number.

45199665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45199665 is an abundant number, since it is smaller than the sum of its proper divisors (49688271).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45199665 is a wasteful number, since it uses less digits than its factorization.

45199665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 176 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 45199665 is about 6723.0696114201. The cubic root of 45199665 is about 356.2146188316.

The spelling of 45199665 in words is "forty-five million, one hundred ninety-nine thousand, six hundred sixty-five".