51305022 has 32 divisors (see below), whose sum is σ = 116796960. Its totient is φ = 16683840.

The previous prime is 51305017. The next prime is 51305047. The reversal of 51305022 is 22050315.

It is a happy number.

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 = 51304986 and 51305004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9373 + ... + 13800.

It is an arithmetic number, because the mean of its divisors is an integer number (3649905).

Almost surely, 2^51305022 is an apocalyptic number.

51305022 is an abundant number, since it is smaller than the sum of its proper divisors (65491938).

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

51305022 is a wasteful number, since it uses less digits than its factorization.

51305022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23225 (or 23219 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 51305022 is about 7162.7524039297. The cubic root of 51305022 is about 371.5808233668.

Adding to 51305022 its reverse (22050315), we get a palindrome (73355337).

The spelling of 51305022 in words is "fifty-one million, three hundred five thousand, twenty-two".