51243153423101 has 4 divisors (see below), whose sum is σ = 51243218756604. Its totient is φ = 51243088089600.

The previous prime is 51243153423053. The next prime is 51243153423103. The reversal of 51243153423101 is 10132435134215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35595005484025 + 15648147939076 = 5966155^2 + 3955774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51243153423101 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 (51243153423103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31475780 + ... + 33063741.

It is an arithmetic number, because the mean of its divisors is an integer number (12810804689151).

Almost surely, 2^{51243153423101} is an apocalyptic number.

It is an amenable number.

51243153423101 is a deficient number, since it is larger than the sum of its proper divisors (65333503).

51243153423101 is an equidigital number, since it uses as much as digits as its factorization.

51243153423101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65333502.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 51243153423101 its reverse (10132435134215), we get a palindrome (61375588557316).

The spelling of 51243153423101 in words is "fifty-one trillion, two hundred forty-three billion, one hundred fifty-three million, four hundred twenty-three thousand, one hundred one".