51222032 has 20 divisors (see below), whose sum is σ = 99537900. Its totient is φ = 25534848.

The previous prime is 51222001. The next prime is 51222047. The reversal of 51222032 is 23022215.

It can be written as a sum of positive squares in 2 ways, for example, as 16128256 + 35093776 = 4016^2 + 5924^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51222032.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (4976895).

Almost surely, 2^51222032 is an apocalyptic number.

It is an amenable number.

51222032 is a deficient number, since it is larger than the sum of its proper divisors (48315868).

51222032 is a wasteful number, since it uses less digits than its factorization.

51222032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530 (or 9524 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51222032 is about 7156.9568952174. The cubic root of 51222032 is about 371.3803612829.

Adding to 51222032 its reverse (23022215), we get a palindrome (74244247).

The spelling of 51222032 in words is "fifty-one million, two hundred twenty-two thousand, thirty-two".