51251122 has 16 divisors (see below), whose sum is σ = 85462272. Its totient is φ = 22890960.

The previous prime is 51251119. The next prime is 51251129. The reversal of 51251122 is 22115215.

It is a self number, because there is not a number n which added to its sum of digits gives 51251122.

It is not an unprimeable number, because it can be changed into a prime (51251129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30988 + ... + 32599.

It is an arithmetic number, because the mean of its divisors is an integer number (5341392).

Almost surely, 2^51251122 is an apocalyptic number.

51251122 is a deficient number, since it is larger than the sum of its proper divisors (34211150).

51251122 is a wasteful number, since it uses less digits than its factorization.

51251122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63633.

The product of its digits is 200, while the sum is 19.

The square root of 51251122 is about 7158.9888950885. The cubic root of 51251122 is about 371.4506527166.

Adding to 51251122 its reverse (22115215), we get a palindrome (73366337).

The spelling of 51251122 in words is "fifty-one million, two hundred fifty-one thousand, one hundred twenty-two".