51403351 has 2 divisors, whose sum is σ = 51403352. Its totient is φ = 51403350.

The previous prime is 51403343. The next prime is 51403369. The reversal of 51403351 is 15330415.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51403351 - 2³ = 51403343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51403951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25701675 + 25701676.

It is an arithmetic number, because the mean of its divisors is an integer number (25701676).

Almost surely, 2^51403351 is an apocalyptic number.

51403351 is a deficient number, since it is larger than the sum of its proper divisors (1).

51403351 is an equidigital number, since it uses as much as digits as its factorization.

51403351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51403351 is about 7169.6130300038. The cubic root of 51403351 is about 371.8180571522.

Adding to 51403351 its reverse (15330415), we get a palindrome (66733766).

The spelling of 51403351 in words is "fifty-one million, four hundred three thousand, three hundred fifty-one".