51142722 has 8 divisors (see below), whose sum is σ = 102285456. Its totient is φ = 17047572.

The previous prime is 51142709. The next prime is 51142723. The reversal of 51142722 is 22724115.

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

51142722 is an admirable number.

It is a super-3 number, since 3×51142722³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51142692 and 51142701.

It is not an unprimeable number, because it can be changed into a prime (51142723) 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, 4261888 + ... + 4261899.

It is an arithmetic number, because the mean of its divisors is an integer number (12785682).

Almost surely, 2^51142722 is an apocalyptic number.

51142722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51142722 is a wasteful number, since it uses less digits than its factorization.

51142722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523792.

The product of its digits is 1120, while the sum is 24.

The square root of 51142722 is about 7151.4139860590. The cubic root of 51142722 is about 371.1885857893.

Adding to 51142722 its reverse (22724115), we get a palindrome (73866837).

The spelling of 51142722 in words is "fifty-one million, one hundred forty-two thousand, seven hundred twenty-two".