45847987 has 2 divisors, whose sum is σ = 45847988. Its totient is φ = 45847986.

The previous prime is 45847973. The next prime is 45848017. The reversal of 45847987 is 78974854.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45847987 - 2⁷ = 45847859 is a prime.

It is not a weakly prime, because it can be changed into another prime (45847937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22923993 + 22923994.

It is an arithmetic number, because the mean of its divisors is an integer number (22923994).

Almost surely, 2^45847987 is an apocalyptic number.

45847987 is a deficient number, since it is larger than the sum of its proper divisors (1).

45847987 is an equidigital number, since it uses as much as digits as its factorization.

45847987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 52.

The square root of 45847987 is about 6771.1141623813. The cubic root of 45847987 is about 357.9096632339.

The spelling of 45847987 in words is "forty-five million, eight hundred forty-seven thousand, nine hundred eighty-seven".