45556078 has 4 divisors (see below), whose sum is σ = 68334120. Its totient is φ = 22778038.

The previous prime is 45556067. The next prime is 45556079. The reversal of 45556078 is 87065554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87065554 = 2 ⋅43532777.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 45556078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45556079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11389018 + ... + 11389021.

It is an arithmetic number, because the mean of its divisors is an integer number (17083530).

Almost surely, 2^45556078 is an apocalyptic number.

45556078 is a deficient number, since it is larger than the sum of its proper divisors (22778042).

45556078 is a wasteful number, since it uses less digits than its factorization.

45556078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22778041.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 45556078 is about 6749.5242795326. The cubic root of 45556078 is about 357.1484551808.

The spelling of 45556078 in words is "forty-five million, five hundred fifty-six thousand, seventy-eight".