45287919 has 6 divisors (see below), whose sum is σ = 65415896. Its totient is φ = 30191940.

The previous prime is 45287911. The next prime is 45287923. The reversal of 45287919 is 91978254.

It is not a de Polignac number, because 45287919 - 2³ = 45287911 is a prime.

It is a super-2 number, since 2×45287919² = 4101991214701122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45287911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2515987 + ... + 2516004.

Almost surely, 2^45287919 is an apocalyptic number.

45287919 is a deficient number, since it is larger than the sum of its proper divisors (20127977).

45287919 is a wasteful number, since it uses less digits than its factorization.

45287919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031997 (or 5031994 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 45287919 is about 6729.6299303899. The cubic root of 45287919 is about 356.4463087955.

The spelling of 45287919 in words is "forty-five million, two hundred eighty-seven thousand, nine hundred nineteen".