994145522 has 4 divisors (see below), whose sum is σ = 1491218286. Its totient is φ = 497072760.

The previous prime is 994145519. The next prime is 994145543. The reversal of 994145522 is 225541499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225541499 = 17 ⋅13267147.

It can be written as a sum of positive squares in only one way, i.e., 784504081 + 209641441 = 28009^2 + 14479^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 994145522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248536379 + ... + 248536382.

Almost surely, 2^994145522 is an apocalyptic number.

994145522 is a deficient number, since it is larger than the sum of its proper divisors (497072764).

994145522 is a wasteful number, since it uses less digits than its factorization.

994145522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497072763.

The product of its digits is 129600, while the sum is 41.

The square root of 994145522 is about 31530.0732951892. The cubic root of 994145522 is about 998.0446865746.

The spelling of 994145522 in words is "nine hundred ninety-four million, one hundred forty-five thousand, five hundred twenty-two".