45019489 has 2 divisors, whose sum is σ = 45019490. Its totient is φ = 45019488.

The previous prime is 45019483. The next prime is 45019589. The reversal of 45019489 is 98491054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41177889 + 3841600 = 6417^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 45019489 - 2⁷ = 45019361 is a prime.

It is a super-2 number, since 2×45019489² = 4053508779642242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45019483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22509744 + 22509745.

It is an arithmetic number, because the mean of its divisors is an integer number (22509745).

Almost surely, 2^45019489 is an apocalyptic number.

It is an amenable number.

45019489 is a deficient number, since it is larger than the sum of its proper divisors (1).

45019489 is an equidigital number, since it uses as much as digits as its factorization.

45019489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 45019489 is about 6709.6563995483. The cubic root of 45019489 is about 355.7406714036.

The spelling of 45019489 in words is "forty-five million, nineteen thousand, four hundred eighty-nine".