51230401 has 4 divisors (see below), whose sum is σ = 54243972. Its totient is φ = 48216832.

The previous prime is 51230393. The next prime is 51230419. The reversal of 51230401 is 10403215.

51230401 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.

It can be written as a sum of positive squares in 2 ways, for example, as 13727025 + 37503376 = 3705^2 + 6124^2 .

It is a cyclic number.

It is not a de Polignac number, because 51230401 - 2³ = 51230393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51230461) 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, 1506760 + ... + 1506793.

It is an arithmetic number, because the mean of its divisors is an integer number (13560993).

Almost surely, 2^51230401 is an apocalyptic number.

It is an amenable number.

51230401 is a deficient number, since it is larger than the sum of its proper divisors (3013571).

51230401 is a wasteful number, since it uses less digits than its factorization.

51230401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013570.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51230401 is about 7157.5415472074. The cubic root of 51230401 is about 371.4005863883.

Adding to 51230401 its reverse (10403215), we get a palindrome (61633616).

The spelling of 51230401 in words is "fifty-one million, two hundred thirty thousand, four hundred one".