45805861 has 2 divisors, whose sum is σ = 45805862. Its totient is φ = 45805860.

The previous prime is 45805847. The next prime is 45805867. The reversal of 45805861 is 16850854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42003361 + 3802500 = 6481^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 45805861 - 2¹⁷ = 45674789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45805861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45805867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22902930 + 22902931.

It is an arithmetic number, because the mean of its divisors is an integer number (22902931).

Almost surely, 2^45805861 is an apocalyptic number.

It is an amenable number.

45805861 is a deficient number, since it is larger than the sum of its proper divisors (1).

45805861 is an equidigital number, since it uses as much as digits as its factorization.

45805861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 45805861 is about 6768.0027334510. The cubic root of 45805861 is about 357.8000115814.

Subtracting from 45805861 its sum of digits (37), we obtain a square (45805824 = 6768²).

The spelling of 45805861 in words is "forty-five million, eight hundred five thousand, eight hundred sixty-one".