45161800 has 24 divisors (see below), whose sum is σ = 105001650. Its totient is φ = 18064640.

The previous prime is 45161773. The next prime is 45161821. The reversal of 45161800 is 816154.

It can be written as a sum of positive squares in 3 ways, for example, as 42224004 + 2937796 = 6498^2 + 1714^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112705 + ... + 113104.

Almost surely, 2^45161800 is an apocalyptic number.

45161800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45161800 is an abundant number, since it is smaller than the sum of its proper divisors (59839850).

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

45161800 is a wasteful number, since it uses less digits than its factorization.

45161800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225825 (or 225816 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 45161800 is about 6720.2529714290. The cubic root of 45161800 is about 356.1151207878.

Adding to 45161800 its reverse (816154), we get a palindrome (45977954).

The spelling of 45161800 in words is "forty-five million, one hundred sixty-one thousand, eight hundred".