51471442 has 8 divisors (see below), whose sum is σ = 84226032. Its totient is φ = 23396100.

The previous prime is 51471421. The next prime is 51471451. The reversal of 51471442 is 24417415.

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

It is a self number, because there is not a number n which added to its sum of digits gives 51471442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169784 + ... + 1169827.

It is an arithmetic number, because the mean of its divisors is an integer number (10528254).

Almost surely, 2^51471442 is an apocalyptic number.

51471442 is a deficient number, since it is larger than the sum of its proper divisors (32754590).

51471442 is a wasteful number, since it uses less digits than its factorization.

51471442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339624.

The product of its digits is 4480, while the sum is 28.

The square root of 51471442 is about 7174.3600411465. The cubic root of 51471442 is about 371.9821598952.

Adding to 51471442 its reverse (24417415), we get a palindrome (75888857).

The spelling of 51471442 in words is "fifty-one million, four hundred seventy-one thousand, four hundred forty-two".