51222723 has 8 divisors (see below), whose sum is σ = 68410128. Its totient is φ = 34091904.

The previous prime is 51222709. The next prime is 51222733. The reversal of 51222723 is 32722215.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51222723 - 2⁴ = 51222707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51222693 and 51222702.

It is not an unprimeable number, because it can be changed into a prime (51222733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11986 + ... + 15687.

It is an arithmetic number, because the mean of its divisors is an integer number (8551266).

Almost surely, 2^51222723 is an apocalyptic number.

51222723 is a deficient number, since it is larger than the sum of its proper divisors (17187405).

51222723 is a wasteful number, since it uses less digits than its factorization.

51222723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28293.

The product of its digits is 1680, while the sum is 24.

The square root of 51222723 is about 7157.0051697620. The cubic root of 51222723 is about 371.3820312848.

Adding to 51222723 its reverse (32722215), we get a palindrome (83944938).

The spelling of 51222723 in words is "fifty-one million, two hundred twenty-two thousand, seven hundred twenty-three".