45161999 has 2 divisors, whose sum is σ = 45162000. Its totient is φ = 45161998.

The previous prime is 45161983. The next prime is 45162001. The reversal of 45161999 is 99916154.

45161999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45161999 - 2⁴ = 45161983 is a prime.

Together with 45162001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45161959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22580999 + 22581000.

It is an arithmetic number, because the mean of its divisors is an integer number (22581000).

Almost surely, 2^45161999 is an apocalyptic number.

45161999 is a deficient number, since it is larger than the sum of its proper divisors (1).

45161999 is an equidigital number, since it uses as much as digits as its factorization.

45161999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 44.

The square root of 45161999 is about 6720.2677774029. The cubic root of 45161999 is about 356.1156438464.

The spelling of 45161999 in words is "forty-five million, one hundred sixty-one thousand, nine hundred ninety-nine".