45566819 has 4 divisors (see below), whose sum is σ = 46191096. Its totient is φ = 44942544.

The previous prime is 45566809. The next prime is 45566827. The reversal of 45566819 is 91866554.

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

It is a cyclic number.

It is not a de Polignac number, because 45566819 - 2¹² = 45562723 is a prime.

It is a super-2 number, since 2×45566819² = 4152669987557522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45566819.

It is not an unprimeable number, because it can be changed into a prime (45566809) 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, 312029 + ... + 312174.

It is an arithmetic number, because the mean of its divisors is an integer number (11547774).

Almost surely, 2^45566819 is an apocalyptic number.

45566819 is a deficient number, since it is larger than the sum of its proper divisors (624277).

45566819 is an equidigital number, since it uses as much as digits as its factorization.

45566819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624276.

The product of its digits is 259200, while the sum is 44.

The square root of 45566819 is about 6750.3199183446. The cubic root of 45566819 is about 357.1765219085.

The spelling of 45566819 in words is "forty-five million, five hundred sixty-six thousand, eight hundred nineteen".