51065142 has 16 divisors (see below), whose sum is σ = 102228480. Its totient is φ = 17005352.

The previous prime is 51065137. The next prime is 51065173. The reversal of 51065142 is 24156015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3859 + ... + 10817.

It is an arithmetic number, because the mean of its divisors is an integer number (6389280).

Almost surely, 2^51065142 is an apocalyptic number.

51065142 is an abundant number, since it is smaller than the sum of its proper divisors (51163338).

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

51065142 is a wasteful number, since it uses less digits than its factorization.

51065142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51065142 is about 7145.9878253465. The cubic root of 51065142 is about 371.0008016005. Note that the first 3 decimals are identical.

The spelling of 51065142 in words is "fifty-one million, sixty-five thousand, one hundred forty-two".