45185801 has 4 divisors (see below), whose sum is σ = 45651732. Its totient is φ = 44719872.

The previous prime is 45185797. The next prime is 45185807. The reversal of 45185801 is 10858154.

45185801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6497401 + 38688400 = 2549^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 45185801 - 2² = 45185797 is a prime.

It is a super-2 number, since 2×45185801² = 4083513224023202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45185807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232820 + ... + 233013.

It is an arithmetic number, because the mean of its divisors is an integer number (11412933).

Almost surely, 2^45185801 is an apocalyptic number.

It is an amenable number.

45185801 is a deficient number, since it is larger than the sum of its proper divisors (465931).

45185801 is an equidigital number, since it uses as much as digits as its factorization.

45185801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465930.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 45185801 is about 6722.0384557067. The cubic root of 45185801 is about 356.1781947821.

The spelling of 45185801 in words is "forty-five million, one hundred eighty-five thousand, eight hundred one".