216146522 has 4 divisors (see below), whose sum is σ = 324219786. Its totient is φ = 108073260.

The previous prime is 216146521. The next prime is 216146537. The reversal of 216146522 is 225641612.

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., 112126921 + 104019601 = 10589^2 + 10199^2 .

It is not an unprimeable number, because it can be changed into a prime (216146521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54036629 + ... + 54036632.

Almost surely, 2^216146522 is an apocalyptic number.

216146522 is a deficient number, since it is larger than the sum of its proper divisors (108073264).

216146522 is a wasteful number, since it uses less digits than its factorization.

216146522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108073263.

The product of its digits is 5760, while the sum is 29.

The square root of 216146522 is about 14701.9223913065. The cubic root of 216146522 is about 600.1356378535.

The spelling of 216146522 in words is "two hundred sixteen million, one hundred forty-six thousand, five hundred twenty-two".