51740086 has 4 divisors (see below), whose sum is σ = 77610132. Its totient is φ = 25870042.

The previous prime is 51740081. The next prime is 51740099. The reversal of 51740086 is 68004715.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51740081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12935020 + ... + 12935023.

It is an arithmetic number, because the mean of its divisors is an integer number (19402533).

Almost surely, 2^51740086 is an apocalyptic number.

51740086 is a deficient number, since it is larger than the sum of its proper divisors (25870046).

51740086 is a wasteful number, since it uses less digits than its factorization.

51740086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25870045.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 51740086 is about 7193.0581813301. The cubic root of 51740086 is about 372.6281972459.

The spelling of 51740086 in words is "fifty-one million, seven hundred forty thousand, eighty-six".