51572144101 has 4 divisors (see below), whose sum is σ = 51572816812. Its totient is φ = 51571471392.

The previous prime is 51572144089. The next prime is 51572144131. The reversal of 51572144101 is 10144127515.

It is a happy number.

51572144101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 39680241601 + 11891902500 = 199199^2 + 109050^2 .

It is a cyclic number.

It is not a de Polignac number, because 51572144101 - 2¹⁷ = 51572013029 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 (51572144131) 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, 204000 + ... + 380473.

It is an arithmetic number, because the mean of its divisors is an integer number (12893204203).

Almost surely, 2^51572144101 is an apocalyptic number.

It is an amenable number.

51572144101 is a deficient number, since it is larger than the sum of its proper divisors (672711).

51572144101 is an equidigital number, since it uses as much as digits as its factorization.

51572144101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672710.

The product of its (nonzero) digits is 5600, while the sum is 31.

The spelling of 51572144101 in words is "fifty-one billion, five hundred seventy-two million, one hundred forty-four thousand, one hundred one".