45186091 has 2 divisors, whose sum is σ = 45186092. Its totient is φ = 45186090.

The previous prime is 45186083. The next prime is 45186103. The reversal of 45186091 is 19068154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45186091 - 2³ = 45186083 is a prime.

It is not a weakly prime, because it can be changed into another prime (45186041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22593045 + 22593046.

It is an arithmetic number, because the mean of its divisors is an integer number (22593046).

Almost surely, 2^45186091 is an apocalyptic number.

45186091 is a deficient number, since it is larger than the sum of its proper divisors (1).

45186091 is an equidigital number, since it uses as much as digits as its factorization.

45186091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 45186091 is about 6722.0600265097. The cubic root of 45186091 is about 356.1789567579.

It can be divided in two parts, 4518 and 6091, that added together give a square (10609 = 103²).

The spelling of 45186091 in words is "forty-five million, one hundred eighty-six thousand, ninety-one".