51522322252 has 24 divisors (see below), whose sum is σ = 92633665824. Its totient is φ = 25056052992.

The previous prime is 51522322219. The next prime is 51522322253. The reversal of 51522322252 is 25222322515.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51522322253) 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, 368673 + ... + 488839.

It is an arithmetic number, because the mean of its divisors is an integer number (3859736076).

Almost surely, 2^51522322252 is an apocalyptic number.

It is an amenable number.

51522322252 is a deficient number, since it is larger than the sum of its proper divisors (41111343572).

51522322252 is a wasteful number, since it uses less digits than its factorization.

51522322252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123105 (or 123103 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

Adding to 51522322252 its reverse (25222322515), we get a palindrome (76744644767).

The spelling of 51522322252 in words is "fifty-one billion, five hundred twenty-two million, three hundred twenty-two thousand, two hundred fifty-two".