51232415101 has 4 divisors (see below), whose sum is σ = 58551331552. Its totient is φ = 43913498652.

The previous prime is 51232415071. The next prime is 51232415111. The reversal of 51232415101 is 10151423215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51232415101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51232415111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659458215 + ... + 3659458228.

It is an arithmetic number, because the mean of its divisors is an integer number (14637832888).

Almost surely, 2^51232415101 is an apocalyptic number.

It is an amenable number.

51232415101 is a deficient number, since it is larger than the sum of its proper divisors (7318916451).

51232415101 is an equidigital number, since it uses as much as digits as its factorization.

51232415101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7318916450.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 51232415101 its reverse (10151423215), we get a palindrome (61383838316).

The spelling of 51232415101 in words is "fifty-one billion, two hundred thirty-two million, four hundred fifteen thousand, one hundred one".