51141532251 has 4 divisors (see below), whose sum is σ = 68188709672. Its totient is φ = 34094354832.

The previous prime is 51141532249. The next prime is 51141532313. The reversal of 51141532251 is 15223514115.

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

It is not a de Polignac number, because 51141532251 - 2¹ = 51141532249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51141582251) 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, 8523588706 + ... + 8523588711.

It is an arithmetic number, because the mean of its divisors is an integer number (17047177418).

Almost surely, 2^51141532251 is an apocalyptic number.

51141532251 is a deficient number, since it is larger than the sum of its proper divisors (17047177421).

51141532251 is a wasteful number, since it uses less digits than its factorization.

51141532251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17047177420.

The product of its digits is 6000, while the sum is 30.

The spelling of 51141532251 in words is "fifty-one billion, one hundred forty-one million, five hundred thirty-two thousand, two hundred fifty-one".