51102379252 has 24 divisors (see below), whose sum is σ = 94438693440. Its totient is φ = 24128544960.

The previous prime is 51102379243. The next prime is 51102379259. The reversal of 51102379252 is 25297320115.

It is a happy number.

It is a super-2 number, since 2×51102379252² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102379259) 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, 1057393 + ... + 1104664.

It is an arithmetic number, because the mean of its divisors is an integer number (3934945560).

Almost surely, 2^51102379252 is an apocalyptic number.

It is an amenable number.

51102379252 is a deficient number, since it is larger than the sum of its proper divisors (43336314188).

51102379252 is a wasteful number, since it uses less digits than its factorization.

51102379252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162391 (or 2162389 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

Adding to 51102379252 its reverse (25297320115), we get a palindrome (76399699367).

The spelling of 51102379252 in words is "fifty-one billion, one hundred two million, three hundred seventy-nine thousand, two hundred fifty-two".