51023742 has 32 divisors (see below), whose sum is σ = 127229184. Its totient is φ = 13252800.

The previous prime is 51023711. The next prime is 51023743. The reversal of 51023742 is 24732015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54759 + ... + 55682.

It is an arithmetic number, because the mean of its divisors is an integer number (3975912).

Almost surely, 2^51023742 is an apocalyptic number.

51023742 is an abundant number, since it is smaller than the sum of its proper divisors (76205442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51023742 is a wasteful number, since it uses less digits than its factorization.

51023742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110464.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 51023742 is about 7143.0905076164. The cubic root of 51023742 is about 370.9005141034.

Adding to 51023742 its reverse (24732015), we get a palindrome (75755757).

The spelling of 51023742 in words is "fifty-one million, twenty-three thousand, seven hundred forty-two".