51616142 has 16 divisors (see below), whose sum is σ = 78246000. Its totient is φ = 25536000.

The previous prime is 51616139. The next prime is 51616153. The reversal of 51616142 is 24161615.

51616142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51616142² = 5328452229928328, which contains 22 as substring.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 114734 + ... + 115182.

It is an arithmetic number, because the mean of its divisors is an integer number (4890375).

Almost surely, 2^51616142 is an apocalyptic number.

51616142 is a deficient number, since it is larger than the sum of its proper divisors (26629858).

51616142 is a wasteful number, since it uses less digits than its factorization.

51616142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 1440, while the sum is 26.

The square root of 51616142 is about 7184.4374866791. The cubic root of 51616142 is about 372.3304142248.

Adding to 51616142 its reverse (24161615), we get a palindrome (75777757).

The spelling of 51616142 in words is "fifty-one million, six hundred sixteen thousand, one hundred forty-two".