51342544201 has 4 divisors (see below), whose sum is σ = 55291970692. Its totient is φ = 47393117712.

The previous prime is 51342544181. The next prime is 51342544229. The reversal of 51342544201 is 10244524315.

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 34484118601 + 16858425600 = 185699^2 + 129840^2 .

It is a cyclic number.

It is not a de Polignac number, because 51342544201 - 2¹⁵ = 51342511433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51342544261) 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, 1974713226 + ... + 1974713251.

It is an arithmetic number, because the mean of its divisors is an integer number (13822992673).

Almost surely, 2^51342544201 is an apocalyptic number.

It is an amenable number.

51342544201 is a deficient number, since it is larger than the sum of its proper divisors (3949426491).

51342544201 is a wasteful number, since it uses less digits than its factorization.

51342544201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949426490.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 51342544201 in words is "fifty-one billion, three hundred forty-two million, five hundred forty-four thousand, two hundred one".