212556794 has 4 divisors (see below), whose sum is σ = 318835194. Its totient is φ = 106278396.

The previous prime is 212556787. The next prime is 212556821. The reversal of 212556794 is 497655212.

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., 107391769 + 105165025 = 10363^2 + 10255^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53139197 + ... + 53139200.

Almost surely, 2^212556794 is an apocalyptic number.

212556794 is a deficient number, since it is larger than the sum of its proper divisors (106278400).

212556794 is a wasteful number, since it uses less digits than its factorization.

212556794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106278399.

The product of its digits is 151200, while the sum is 41.

The square root of 212556794 is about 14579.3276250999. The cubic root of 212556794 is about 596.7947541179.

The spelling of 212556794 in words is "two hundred twelve million, five hundred fifty-six thousand, seven hundred ninety-four".