51443242 has 8 divisors (see below), whose sum is σ = 77216256. Its totient is φ = 25704492.

The previous prime is 51443213. The next prime is 51443243. The reversal of 51443242 is 24234415.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (51443243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4408 + ... + 11059.

It is an arithmetic number, because the mean of its divisors is an integer number (9652032).

Almost surely, 2^51443242 is an apocalyptic number.

51443242 is a deficient number, since it is larger than the sum of its proper divisors (25773014).

51443242 is a wasteful number, since it uses less digits than its factorization.

51443242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17132.

The product of its digits is 3840, while the sum is 25.

The square root of 51443242 is about 7172.3944397948. The cubic root of 51443242 is about 371.9142140414.

Adding to 51443242 its reverse (24234415), we get a palindrome (75677657).

The spelling of 51443242 in words is "fifty-one million, four hundred forty-three thousand, two hundred forty-two".