51553142 has 4 divisors (see below), whose sum is σ = 77329716. Its totient is φ = 25776570.

The previous prime is 51553121. The next prime is 51553147. The reversal of 51553142 is 24135515.

51553142 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 is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51553147) 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 as a sum of consecutive naturals, namely, 12888284 + ... + 12888287.

It is an arithmetic number, because the mean of its divisors is an integer number (19332429).

Almost surely, 2^51553142 is an apocalyptic number.

51553142 is a deficient number, since it is larger than the sum of its proper divisors (25776574).

51553142 is a wasteful number, since it uses less digits than its factorization.

51553142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25776573.

The product of its digits is 3000, while the sum is 26.

The square root of 51553142 is about 7180.0516711233. The cubic root of 51553142 is about 372.1788701208.

Adding to 51553142 its reverse (24135515), we get a palindrome (75688657).

The spelling of 51553142 in words is "fifty-one million, five hundred fifty-three thousand, one hundred forty-two".