51085497 has 8 divisors (see below), whose sum is σ = 68788800. Its totient is φ = 33719600.

The previous prime is 51085477. The next prime is 51085499. The reversal of 51085497 is 79458015.

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

It is a cyclic number.

It is not a de Polignac number, because 51085497 - 2²² = 46891193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51085499) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 83997 + ... + 84602.

It is an arithmetic number, because the mean of its divisors is an integer number (8598600).

Almost surely, 2^51085497 is an apocalyptic number.

It is an amenable number.

51085497 is a deficient number, since it is larger than the sum of its proper divisors (17703303).

51085497 is a wasteful number, since it uses less digits than its factorization.

51085497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168703.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 51085497 is about 7147.4119092158. The cubic root of 51085497 is about 371.0500897440.

The spelling of 51085497 in words is "fifty-one million, eighty-five thousand, four hundred ninety-seven".