51722236 has 12 divisors (see below), whose sum is σ = 90570312. Its totient is φ = 25845008.

The previous prime is 51722233. The next prime is 51722267. The reversal of 51722236 is 63222715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51722233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5931 + ... + 11773.

It is an arithmetic number, because the mean of its divisors is an integer number (7547526).

Almost surely, 2^51722236 is an apocalyptic number.

It is an amenable number.

51722236 is a deficient number, since it is larger than the sum of its proper divisors (38848076).

51722236 is a wasteful number, since it uses less digits than its factorization.

51722236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060 (or 8058 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 51722236 is about 7191.8172946759. The cubic root of 51722236 is about 372.5853408659.

The spelling of 51722236 in words is "fifty-one million, seven hundred twenty-two thousand, two hundred thirty-six".