51133442 has 8 divisors (see below), whose sum is σ = 76735296. Its totient is φ = 25555012.

The previous prime is 51133441. The next prime is 51133457. The reversal of 51133442 is 24433115.

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

It is a super-2 number, since 2×51133442² = 5229257781534728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51133441) 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, 1403 + ... + 10209.

It is an arithmetic number, because the mean of its divisors is an integer number (9591912).

Almost surely, 2^51133442 is an apocalyptic number.

51133442 is a deficient number, since it is larger than the sum of its proper divisors (25601854).

51133442 is a wasteful number, since it uses less digits than its factorization.

51133442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11712.

The product of its digits is 1440, while the sum is 23.

The square root of 51133442 is about 7150.7651338860. The cubic root of 51133442 is about 371.1661333379.

Adding to 51133442 its reverse (24433115), we get a palindrome (75566557).

The spelling of 51133442 in words is "fifty-one million, one hundred thirty-three thousand, four hundred forty-two".