45571919 has 8 divisors (see below), whose sum is σ = 46300320. Its totient is φ = 44849376.

The previous prime is 45571909. The next prime is 45571921. The reversal of 45571919 is 91917554.

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 45571919 - 2²⁰ = 44523343 is a prime.

It is a super-2 number, since 2×45571919² = 4153599602685122, 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 (45571909) 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, 15782 + ... + 18444.

It is an arithmetic number, because the mean of its divisors is an integer number (5787540).

Almost surely, 2^45571919 is an apocalyptic number.

45571919 is a deficient number, since it is larger than the sum of its proper divisors (728401).

45571919 is a wasteful number, since it uses less digits than its factorization.

45571919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929.

The product of its digits is 56700, while the sum is 41.

The square root of 45571919 is about 6750.6976676489. The cubic root of 45571919 is about 357.1898468991.

The spelling of 45571919 in words is "forty-five million, five hundred seventy-one thousand, nine hundred nineteen".