51205045532 has 6 divisors (see below), whose sum is σ = 89608829688. Its totient is φ = 25602522764.

The previous prime is 51205045531. The next prime is 51205045561. The reversal of 51205045532 is 23554050215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51205045531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6400630688 + ... + 6400630695.

It is an arithmetic number, because the mean of its divisors is an integer number (14934804948).

Almost surely, 2^51205045532 is an apocalyptic number.

It is an amenable number.

51205045532 is a deficient number, since it is larger than the sum of its proper divisors (38403784156).

51205045532 is a wasteful number, since it uses less digits than its factorization.

51205045532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12801261387 (or 12801261385 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 51205045532 its reverse (23554050215), we get a palindrome (74759095747).

The spelling of 51205045532 in words is "fifty-one billion, two hundred five million, forty-five thousand, five hundred thirty-two".