45556919 has 2 divisors, whose sum is σ = 45556920. Its totient is φ = 45556918.

The previous prime is 45556913. The next prime is 45556921. The reversal of 45556919 is 91965554.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45556919 is a prime.

It is a super-2 number, since 2×45556919² = 4150865737545122, which contains 22 as substring.

Together with 45556921, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45556919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45556913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22778459 + 22778460.

It is an arithmetic number, because the mean of its divisors is an integer number (22778460).

Almost surely, 2^45556919 is an apocalyptic number.

45556919 is a deficient number, since it is larger than the sum of its proper divisors (1).

45556919 is an equidigital number, since it uses as much as digits as its factorization.

45556919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 44.

The square root of 45556919 is about 6749.5865799321. The cubic root of 45556919 is about 357.1506529117.

The spelling of 45556919 in words is "forty-five million, five hundred fifty-six thousand, nine hundred nineteen".