51201423 has 72 divisors (see below), whose sum is σ = 95965200. Its totient is φ = 26889408.

The previous prime is 51201419. The next prime is 51201431. The reversal of 51201423 is 32410215.

51201423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51201423 - 2² = 51201419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51201396 and 51201405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51201223) 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 71 ways as a sum of consecutive naturals, for example, 223473 + ... + 223701.

It is an arithmetic number, because the mean of its divisors is an integer number (1332850).

Almost surely, 2^51201423 is an apocalyptic number.

51201423 is a deficient number, since it is larger than the sum of its proper divisors (44763777).

51201423 is a wasteful number, since it uses less digits than its factorization.

51201423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51201423 is about 7155.5169624563. The cubic root of 51201423 is about 371.3305467514.

Adding to 51201423 its reverse (32410215), we get a palindrome (83611638).

The spelling of 51201423 in words is "fifty-one million, two hundred one thousand, four hundred twenty-three".