51233242 has 4 divisors (see below), whose sum is σ = 76849866. Its totient is φ = 25616620.

The previous prime is 51233239. The next prime is 51233251. The reversal of 51233242 is 24233215.

51233242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49434961 + 1798281 = 7031^2 + 1341^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808309 + ... + 12808312.

Almost surely, 2^51233242 is an apocalyptic number.

51233242 is a deficient number, since it is larger than the sum of its proper divisors (25616624).

51233242 is a wasteful number, since it uses less digits than its factorization.

51233242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25616623.

The product of its digits is 1440, while the sum is 22.

The square root of 51233242 is about 7157.7400064546. The cubic root of 51233242 is about 371.4074516450.

Adding to 51233242 its reverse (24233215), we get a palindrome (75466457).

The spelling of 51233242 in words is "fifty-one million, two hundred thirty-three thousand, two hundred forty-two".