45987187 has 2 divisors, whose sum is σ = 45987188. Its totient is φ = 45987186.

The previous prime is 45987181. The next prime is 45987203. The reversal of 45987187 is 78178954.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45987187 - 2⁷ = 45987059 is a prime.

It is a super-2 number, since 2×45987187² = 4229642736345938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45987187.

It is not a weakly prime, because it can be changed into another prime (45987181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22993593 + 22993594.

It is an arithmetic number, because the mean of its divisors is an integer number (22993594).

Almost surely, 2^45987187 is an apocalyptic number.

45987187 is a deficient number, since it is larger than the sum of its proper divisors (1).

45987187 is an equidigital number, since it uses as much as digits as its factorization.

45987187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 49.

The square root of 45987187 is about 6781.3853304469. The cubic root of 45987187 is about 358.2715161917.

The spelling of 45987187 in words is "forty-five million, nine hundred eighty-seven thousand, one hundred eighty-seven".