45591487 has 2 divisors, whose sum is σ = 45591488. Its totient is φ = 45591486.

The previous prime is 45591473. The next prime is 45591499. The reversal of 45591487 is 78419554.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45591487 - 2¹⁵ = 45558719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45591187) 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, 22795743 + 22795744.

It is an arithmetic number, because the mean of its divisors is an integer number (22795744).

Almost surely, 2^45591487 is an apocalyptic number.

45591487 is a deficient number, since it is larger than the sum of its proper divisors (1).

45591487 is an equidigital number, since it uses as much as digits as its factorization.

45591487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 45591487 is about 6752.1468437824. The cubic root of 45591487 is about 357.2409638363.

The spelling of 45591487 in words is "forty-five million, five hundred ninety-one thousand, four hundred eighty-seven".