51201245122 has 8 divisors (see below), whose sum is σ = 76804143372. Its totient is φ = 25599864000.

The previous prime is 51201245107. The next prime is 51201245131. The reversal of 51201245122 is 22154210215.

It can be written as a sum of positive squares in 2 ways, for example, as 47184093961 + 4017151161 = 217219^2 + 63381^2 .

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

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, 290779 + ... + 432382.

Almost surely, 2^51201245122 is an apocalyptic number.

51201245122 is a deficient number, since it is larger than the sum of its proper divisors (25602898250).

51201245122 is a wasteful number, since it uses less digits than its factorization.

51201245122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758564.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 51201245122 its reverse (22154210215), we get a palindrome (73355455337).

The spelling of 51201245122 in words is "fifty-one billion, two hundred one million, two hundred forty-five thousand, one hundred twenty-two".