45940187 has 2 divisors, whose sum is σ = 45940188. Its totient is φ = 45940186.

The previous prime is 45940151. The next prime is 45940189. The reversal of 45940187 is 78104954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45940187 - 2¹⁶ = 45874651 is a prime.

It is a super-2 number, since 2×45940187² = 4221001563189938, which contains 22 as substring.

Together with 45940189, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45940187.

It is not a weakly prime, because it can be changed into another prime (45940189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22970093 + 22970094.

It is an arithmetic number, because the mean of its divisors is an integer number (22970094).

Almost surely, 2^45940187 is an apocalyptic number.

45940187 is a deficient number, since it is larger than the sum of its proper divisors (1).

45940187 is an equidigital number, since it uses as much as digits as its factorization.

45940187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 45940187 is about 6777.9190759406. The cubic root of 45940187 is about 358.1494205809.

The spelling of 45940187 in words is "forty-five million, nine hundred forty thousand, one hundred eighty-seven".