45273919 has 8 divisors (see below), whose sum is σ = 46858880. Its totient is φ = 43696800.

The previous prime is 45273871. The next prime is 45273923. The reversal of 45273919 is 91937254.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45273919 - 2¹⁵ = 45241151 is a prime.

It is a super-2 number, since 2×45273919² = 4099455483237122, 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 (45273929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11317 + ... + 14785.

It is an arithmetic number, because the mean of its divisors is an integer number (5857360).

Almost surely, 2^45273919 is an apocalyptic number.

45273919 is a deficient number, since it is larger than the sum of its proper divisors (1584961).

45273919 is a wasteful number, since it uses less digits than its factorization.

45273919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921.

The product of its digits is 68040, while the sum is 40.

The square root of 45273919 is about 6728.5896739213. The cubic root of 45273919 is about 356.4095752123.

The spelling of 45273919 in words is "forty-five million, two hundred seventy-three thousand, nine hundred nineteen".