51085942 has 8 divisors (see below), whose sum is σ = 77026536. Its totient is φ = 25410432.

The previous prime is 51085913. The next prime is 51085943. The reversal of 51085942 is 24958015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51085898 and 51085907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51085943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65788 + ... + 66559.

It is an arithmetic number, because the mean of its divisors is an integer number (9628317).

Almost surely, 2^51085942 is an apocalyptic number.

51085942 is a deficient number, since it is larger than the sum of its proper divisors (25940594).

51085942 is a wasteful number, since it uses less digits than its factorization.

51085942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132542.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 51085942 is about 7147.4430392973. The cubic root of 51085942 is about 371.0511671327.

The spelling of 51085942 in words is "fifty-one million, eighty-five thousand, nine hundred forty-two".