45555442 has 4 divisors (see below), whose sum is σ = 68333166. Its totient is φ = 22777720.

The previous prime is 45555437. The next prime is 45555449. The reversal of 45555442 is 24455554.

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

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 919681 = 6681^2 + 959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45555398 and 45555407.

It is not an unprimeable number, because it can be changed into a prime (45555449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11388859 + ... + 11388862.

Almost surely, 2^45555442 is an apocalyptic number.

45555442 is a deficient number, since it is larger than the sum of its proper divisors (22777724).

45555442 is a wasteful number, since it uses less digits than its factorization.

45555442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777723.

The product of its digits is 80000, while the sum is 34.

The square root of 45555442 is about 6749.4771649366. The cubic root of 45555442 is about 357.1467931452.

The spelling of 45555442 in words is "forty-five million, five hundred fifty-five thousand, four hundred forty-two".