45131893 has 2 divisors, whose sum is σ = 45131894. Its totient is φ = 45131892.

The previous prime is 45131839. The next prime is 45131899. The reversal of 45131893 is 39813154.

Together with previous prime (45131839) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 18164644 = 5193^2 + 4262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45131893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45131899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22565946 + 22565947.

It is an arithmetic number, because the mean of its divisors is an integer number (22565947).

Almost surely, 2^45131893 is an apocalyptic number.

It is an amenable number.

45131893 is a deficient number, since it is larger than the sum of its proper divisors (1).

45131893 is an equidigital number, since it uses as much as digits as its factorization.

45131893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 45131893 is about 6718.0274634747. The cubic root of 45131893 is about 356.0364947016.

The spelling of 45131893 in words is "forty-five million, one hundred thirty-one thousand, eight hundred ninety-three".