51353402 has 8 divisors (see below), whose sum is σ = 78909012. Its totient is φ = 25050400.

The previous prime is 51353389. The next prime is 51353417. The reversal of 51353402 is 20435315.

It can be written as a sum of positive squares in 2 ways, for example, as 32160241 + 19193161 = 5671^2 + 4381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313049 + ... + 313212.

Almost surely, 2^51353402 is an apocalyptic number.

51353402 is a deficient number, since it is larger than the sum of its proper divisors (27555610).

51353402 is a wasteful number, since it uses less digits than its factorization.

51353402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626304.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 51353402 is about 7166.1288015218. The cubic root of 51353402 is about 371.6975853767.

Adding to 51353402 its reverse (20435315), we get a palindrome (71788717).

The spelling of 51353402 in words is "fifty-one million, three hundred fifty-three thousand, four hundred two".