51187434 has 32 divisors (see below), whose sum is σ = 105416640. Its totient is φ = 16560000.

The previous prime is 51187421. The next prime is 51187439. The reversal of 51187434 is 43478115.

51187434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51187395 and 51187404.

It is not an unprimeable number, because it can be changed into a prime (51187439) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 61332 + ... + 62160.

It is an arithmetic number, because the mean of its divisors is an integer number (3294270).

Almost surely, 2^51187434 is an apocalyptic number.

51187434 is an abundant number, since it is smaller than the sum of its proper divisors (54229206).

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

51187434 is a wasteful number, since it uses less digits than its factorization.

51187434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 13440, while the sum is 33.

The square root of 51187434 is about 7154.5393981723. The cubic root of 51187434 is about 371.2967259715.

The spelling of 51187434 in words is "fifty-one million, one hundred eighty-seven thousand, four hundred thirty-four".