45778019 has 4 divisors (see below), whose sum is σ = 52317744. Its totient is φ = 39238296.

The previous prime is 45778013. The next prime is 45778021. The reversal of 45778019 is 91087754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91087754 = 2 ⋅45543877.

It is a cyclic number.

It is not a de Polignac number, because 45778019 - 2⁸ = 45777763 is a prime.

It is a super-2 number, since 2×45778019² = 4191254047128722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45778013) 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, 3269852 + ... + 3269865.

It is an arithmetic number, because the mean of its divisors is an integer number (13079436).

Almost surely, 2^45778019 is an apocalyptic number.

45778019 is a deficient number, since it is larger than the sum of its proper divisors (6539725).

45778019 is an equidigital number, since it uses as much as digits as its factorization.

45778019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539724.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 45778019 is about 6765.9455362869. The cubic root of 45778019 is about 357.7275034879.

The spelling of 45778019 in words is "forty-five million, seven hundred seventy-eight thousand, nineteen".