45280319 has 4 divisors (see below), whose sum is σ = 51748944. Its totient is φ = 38811696.

The previous prime is 45280289. The next prime is 45280337. The reversal of 45280319 is 91308254.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45280319 - 2⁸ = 45280063 is a prime.

It is a super-2 number, since 2×45280319² = 4100614577483522, 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 (45282319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3234302 + ... + 3234315.

It is an arithmetic number, because the mean of its divisors is an integer number (12937236).

Almost surely, 2^45280319 is an apocalyptic number.

45280319 is a deficient number, since it is larger than the sum of its proper divisors (6468625).

45280319 is an equidigital number, since it uses as much as digits as its factorization.

45280319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468624.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 45280319 is about 6729.0652396897. The cubic root of 45280319 is about 356.4263686470.

The spelling of 45280319 in words is "forty-five million, two hundred eighty thousand, three hundred nineteen".