51202156252 has 12 divisors (see below), whose sum is σ = 96496371496. Its totient is φ = 23631764400.

The previous prime is 51202156241. The next prime is 51202156259. The reversal of 51202156252 is 25265120215.

It is a happy number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51202156259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492328374 + ... + 492328477.

Almost surely, 2^51202156252 is an apocalyptic number.

51202156252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51202156252 is a deficient number, since it is larger than the sum of its proper divisors (45294215244).

51202156252 is a wasteful number, since it uses less digits than its factorization.

51202156252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984656868 (or 984656866 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 51202156252 its reverse (25265120215), we get a palindrome (76467276467).

The spelling of 51202156252 in words is "fifty-one billion, two hundred two million, one hundred fifty-six thousand, two hundred fifty-two".