51253132241 has 4 divisors (see below), whose sum is σ = 52018104432. Its totient is φ = 50488160052.

The previous prime is 51253132199. The next prime is 51253132253. The reversal of 51253132241 is 14223135215.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14223135215 = 5 ⋅2844627043.

It is a cyclic number.

It is not a de Polignac number, because 51253132241 - 2²⁶ = 51186023377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51253132291) 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, 382485995 + ... + 382486128.

It is an arithmetic number, because the mean of its divisors is an integer number (13004526108).

Almost surely, 2^51253132241 is an apocalyptic number.

It is an amenable number.

51253132241 is a deficient number, since it is larger than the sum of its proper divisors (764972191).

51253132241 is an equidigital number, since it uses as much as digits as its factorization.

51253132241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764972190.

The product of its digits is 7200, while the sum is 29.

Adding to 51253132241 its reverse (14223135215), we get a palindrome (65476267456).

The spelling of 51253132241 in words is "fifty-one billion, two hundred fifty-three million, one hundred thirty-two thousand, two hundred forty-one".