51413403 has 4 divisors (see below), whose sum is σ = 68551208. Its totient is φ = 34275600.

The previous prime is 51413381. The next prime is 51413419. The reversal of 51413403 is 30431415.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51413403 - 2⁹ = 51412891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51413403.

It is not an unprimeable number, because it can be changed into a prime (51413473) 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, 8568898 + ... + 8568903.

It is an arithmetic number, because the mean of its divisors is an integer number (17137802).

Almost surely, 2^51413403 is an apocalyptic number.

51413403 is a deficient number, since it is larger than the sum of its proper divisors (17137805).

51413403 is a wasteful number, since it uses less digits than its factorization.

51413403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17137804.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51413403 is about 7170.3140098604. The cubic root of 51413403 is about 371.8422920930.

Adding to 51413403 its reverse (30431415), we get a palindrome (81844818).

The spelling of 51413403 in words is "fifty-one million, four hundred thirteen thousand, four hundred three".