51351451 has 2 divisors, whose sum is σ = 51351452. Its totient is φ = 51351450.

The previous prime is 51351439. The next prime is 51351467. The reversal of 51351451 is 15415315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51351451 - 2²⁵ = 17797019 is a prime.

It is equal to p_3077242 and since 51351451 and 3077242 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51351481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25675725 + 25675726.

It is an arithmetic number, because the mean of its divisors is an integer number (25675726).

Almost surely, 2^51351451 is an apocalyptic number.

51351451 is a deficient number, since it is larger than the sum of its proper divisors (1).

51351451 is an equidigital number, since it uses as much as digits as its factorization.

51351451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 25.

The square root of 51351451 is about 7165.9926737333. The cubic root of 51351451 is about 371.6928781834.

Adding to 51351451 its reverse (15415315), we get a palindrome (66766766).

The spelling of 51351451 in words is "fifty-one million, three hundred fifty-one thousand, four hundred fifty-one".