51108451 has 2 divisors, whose sum is σ = 51108452. Its totient is φ = 51108450.

The previous prime is 51108413. The next prime is 51108457. The reversal of 51108451 is 15480115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51108451 - 2⁹ = 51107939 is a prime.

It is a super-2 number, since 2×51108451² = 5224147527238802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51108457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25554225 + 25554226.

It is an arithmetic number, because the mean of its divisors is an integer number (25554226).

Almost surely, 2^51108451 is an apocalyptic number.

51108451 is a deficient number, since it is larger than the sum of its proper divisors (1).

51108451 is an equidigital number, since it uses as much as digits as its factorization.

51108451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 51108451 is about 7149.0174849415. The cubic root of 51108451 is about 371.1056554716.

Adding to 51108451 its reverse (15480115), we get a palindrome (66588566).

The spelling of 51108451 in words is "fifty-one million, one hundred eight thousand, four hundred fifty-one".