51010722 has 40 divisors (see below), whose sum is σ = 130633536. Its totient is φ = 14574168.

The previous prime is 51010709. The next prime is 51010723. The reversal of 51010722 is 22701015.

It is a super-2 number, since 2×51010722² = 5204187517922568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 51010695 and 51010704.

It is not an unprimeable number, because it can be changed into a prime (51010723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21358 + ... + 23625.

Almost surely, 2^51010722 is an apocalyptic number.

51010722 is an abundant number, since it is smaller than the sum of its proper divisors (79622814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51010722 is a wasteful number, since it uses less digits than its factorization.

51010722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45004 (or 44995 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 51010722 is about 7142.1790792447. The cubic root of 51010722 is about 370.8689631997.

Adding to 51010722 its reverse (22701015), we get a palindrome (73711737).

The spelling of 51010722 in words is "fifty-one million, ten thousand, seven hundred twenty-two".