51422402 has 16 divisors (see below), whose sum is σ = 79184952. Its totient is φ = 25034880.

The previous prime is 51422377. The next prime is 51422407. The reversal of 51422402 is 20422415.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47623801 + 3798601 = 6901^2 + 1949^2 .

It is not an unprimeable number, because it can be changed into a prime (51422407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12752 + ... + 16292.

Almost surely, 2^51422402 is an apocalyptic number.

51422402 is a deficient number, since it is larger than the sum of its proper divisors (27762550).

51422402 is a wasteful number, since it uses less digits than its factorization.

51422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 51422402 is about 7170.9415002495. The cubic root of 51422402 is about 371.8639856164.

Adding to 51422402 its reverse (20422415), we get a palindrome (71844817).

The spelling of 51422402 in words is "fifty-one million, four hundred twenty-two thousand, four hundred two".