51542304312 has 32 divisors (see below), whose sum is σ = 128865196800. Its totient is φ = 17179509984.

The previous prime is 51542304257. The next prime is 51542304313. The reversal of 51542304312 is 21340324515.

It is a self number, because there is not a number n which added to its sum of digits gives 51542304312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51542304313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291489 + ... + 433647.

It is an arithmetic number, because the mean of its divisors is an integer number (4027037400).

Almost surely, 2^51542304312 is an apocalyptic number.

It is an amenable number.

51542304312 is an abundant number, since it is smaller than the sum of its proper divisors (77322892488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51542304312 is a wasteful number, since it uses less digits than its factorization.

51542304312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157275 (or 157271 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51542304312 its reverse (21340324515), we get a palindrome (72882628827).

The spelling of 51542304312 in words is "fifty-one billion, five hundred forty-two million, three hundred four thousand, three hundred twelve".