51542232451 has 2 divisors, whose sum is σ = 51542232452. Its totient is φ = 51542232450.

The previous prime is 51542232409. The next prime is 51542232457. The reversal of 51542232451 is 15423224515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51542232451 - 2³³ = 42952297859 is a prime.

It is not a weakly prime, because it can be changed into another prime (51542232457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25771116225 + 25771116226.

It is an arithmetic number, because the mean of its divisors is an integer number (25771116226).

Almost surely, 2^51542232451 is an apocalyptic number.

51542232451 is a deficient number, since it is larger than the sum of its proper divisors (1).

51542232451 is an equidigital number, since it uses as much as digits as its factorization.

51542232451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 34.

Adding to 51542232451 its reverse (15423224515), we get a palindrome (66965456966).

The spelling of 51542232451 in words is "fifty-one billion, five hundred forty-two million, two hundred thirty-two thousand, four hundred fifty-one".