51610142 has 4 divisors (see below), whose sum is σ = 77415216. Its totient is φ = 25805070.

The previous prime is 51610123. The next prime is 51610171. The reversal of 51610142 is 24101615.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12902534 + ... + 12902537.

It is an arithmetic number, because the mean of its divisors is an integer number (19353804).

Almost surely, 2^51610142 is an apocalyptic number.

51610142 is a deficient number, since it is larger than the sum of its proper divisors (25805074).

51610142 is a wasteful number, since it uses less digits than its factorization.

51610142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25805073.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51610142 is about 7184.0199053176. The cubic root of 51610142 is about 372.3159867675.

Adding to 51610142 its reverse (24101615), we get a palindrome (75711757).

The spelling of 51610142 in words is "fifty-one million, six hundred ten thousand, one hundred forty-two".