51123022 has 4 divisors (see below), whose sum is σ = 76684536. Its totient is φ = 25561510.

The previous prime is 51122987. The next prime is 51123031. The reversal of 51123022 is 22032115.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×51123022² = 5227126756824968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51122987 and 51123005.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12780754 + ... + 12780757.

It is an arithmetic number, because the mean of its divisors is an integer number (19171134).

Almost surely, 2^51123022 is an apocalyptic number.

51123022 is a deficient number, since it is larger than the sum of its proper divisors (25561514).

51123022 is a wasteful number, since it uses less digits than its factorization.

51123022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25561513.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51123022 is about 7150.0365034033. The cubic root of 51123022 is about 371.1409194811.

Adding to 51123022 its reverse (22032115), we get a palindrome (73155137).

The spelling of 51123022 in words is "fifty-one million, one hundred twenty-three thousand, twenty-two".