51303413 has 4 divisors (see below), whose sum is σ = 58632480. Its totient is φ = 43974348.

The previous prime is 51303383. The next prime is 51303457. The reversal of 51303413 is 31430315.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 51303413 - 2¹⁰ = 51302389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51303113) 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, 3664523 + ... + 3664536.

It is an arithmetic number, because the mean of its divisors is an integer number (14658120).

Almost surely, 2^51303413 is an apocalyptic number.

It is an amenable number.

51303413 is a deficient number, since it is larger than the sum of its proper divisors (7329067).

51303413 is an equidigital number, since it uses as much as digits as its factorization.

51303413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329066.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 51303413 is about 7162.6400858901. The cubic root of 51303413 is about 371.5769388881.

Adding to 51303413 its reverse (31430315), we get a palindrome (82733728).

The spelling of 51303413 in words is "fifty-one million, three hundred three thousand, four hundred thirteen".