45857189 has 6 divisors (see below), whose sum is σ = 53344134. Its totient is φ = 39306120.

The previous prime is 45857183. The next prime is 45857191. The reversal of 45857189 is 98175854.

It can be written as a sum of positive squares in only one way, i.e., 31832164 + 14025025 = 5642^2 + 3745^2 .

It is a de Polignac number, because none of the positive numbers 2^k-45857189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45857183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 467882 + ... + 467979.

It is an arithmetic number, because the mean of its divisors is an integer number (8890689).

Almost surely, 2^45857189 is an apocalyptic number.

45857189 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

45857189 is a deficient number, since it is larger than the sum of its proper divisors (7486945).

45857189 is an equidigital number, since it uses as much as digits as its factorization.

45857189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935875 (or 935868 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The square root of 45857189 is about 6771.7936324138. The cubic root of 45857189 is about 357.9336065926.

The spelling of 45857189 in words is "forty-five million, eight hundred fifty-seven thousand, one hundred eighty-nine".