51154542 has 24 divisors (see below), whose sum is σ = 111399600. Its totient is φ = 16964640.

The previous prime is 51154541. The next prime is 51154549. The reversal of 51154542 is 24545115.

51154542 is a `hidden beast` number, since 5 + 115 + 4 + 542 = 666.

51154542 is nontrivially palindromic in base 13.

51154542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51154541) 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 11 ways as a sum of consecutive naturals, for example, 3559 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (4641650).

Almost surely, 2^51154542 is an apocalyptic number.

51154542 is an abundant number, since it is smaller than the sum of its proper divisors (60245058).

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

51154542 is a wasteful number, since it uses less digits than its factorization.

51154542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14488 (or 14485 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 51154542 is about 7152.2403483105. The cubic root of 51154542 is about 371.2171796990.

Adding to 51154542 its reverse (24545115), we get a palindrome (75699657).

The spelling of 51154542 in words is "fifty-one million, one hundred fifty-four thousand, five hundred forty-two".