51332372501 has 8 divisors (see below), whose sum is σ = 51406548864. Its totient is φ = 51258243600.

The previous prime is 51332372489. The next prime is 51332372557. The reversal of 51332372501 is 10527323315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51332372501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51332072501) 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, 2533256 + ... + 2553438.

It is an arithmetic number, because the mean of its divisors is an integer number (6425818608).

Almost surely, 2^51332372501 is an apocalyptic number.

It is an amenable number.

51332372501 is a deficient number, since it is larger than the sum of its proper divisors (74176363).

51332372501 is a wasteful number, since it uses less digits than its factorization.

51332372501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23731.

The product of its (nonzero) digits is 18900, while the sum is 32.

Adding to 51332372501 its reverse (10527323315), we get a palindrome (61859695816).

The spelling of 51332372501 in words is "fifty-one billion, three hundred thirty-two million, three hundred seventy-two thousand, five hundred one".