51203413 has 4 divisors (see below), whose sum is σ = 52855168. Its totient is φ = 49551660.

The previous prime is 51203407. The next prime is 51203419. The reversal of 51203413 is 31430215.

51203413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31430215 = 5 ⋅6286043.

It is an interprime number because it is at equal distance from previous prime (51203407) and next prime (51203419).

It is a cyclic number.

It is not a de Polignac number, because 51203413 - 2⁹ = 51202901 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 (51203419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825831 + ... + 825892.

It is an arithmetic number, because the mean of its divisors is an integer number (13213792).

Almost surely, 2^51203413 is an apocalyptic number.

It is an amenable number.

51203413 is a deficient number, since it is larger than the sum of its proper divisors (1651755).

51203413 is a wasteful number, since it uses less digits than its factorization.

51203413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651754.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51203413 is about 7155.6560146502. The cubic root of 51203413 is about 371.3353574133.

Adding to 51203413 its reverse (31430215), we get a palindrome (82633628).

The spelling of 51203413 in words is "fifty-one million, two hundred three thousand, four hundred thirteen".