51142400252 has 6 divisors (see below), whose sum is σ = 89499200448. Its totient is φ = 25571200124.

The previous prime is 51142400227. The next prime is 51142400273. The reversal of 51142400252 is 25200424115.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392800028 + ... + 6392800035.

It is an arithmetic number, because the mean of its divisors is an integer number (14916533408).

Almost surely, 2^51142400252 is an apocalyptic number.

It is an amenable number.

51142400252 is a deficient number, since it is larger than the sum of its proper divisors (38356800196).

51142400252 is a wasteful number, since it uses less digits than its factorization.

51142400252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785600067 (or 12785600065 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 51142400252 its reverse (25200424115), we get a palindrome (76342824367).

The spelling of 51142400252 in words is "fifty-one billion, one hundred forty-two million, four hundred thousand, two hundred fifty-two".