51401422 has 8 divisors (see below), whose sum is σ = 81160200. Its totient is φ = 24348024.

The previous prime is 51401419. The next prime is 51401423. The reversal of 51401422 is 22410415.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 51401422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51401423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676297 + ... + 676372.

It is an arithmetic number, because the mean of its divisors is an integer number (10145025).

Almost surely, 2^51401422 is an apocalyptic number.

51401422 is a deficient number, since it is larger than the sum of its proper divisors (29758778).

51401422 is a wasteful number, since it uses less digits than its factorization.

51401422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352690.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 51401422 is about 7169.4785026528. The cubic root of 51401422 is about 371.8134060546.

Adding to 51401422 its reverse (22410415), we get a palindrome (73811837).

The spelling of 51401422 in words is "fifty-one million, four hundred one thousand, four hundred twenty-two".