51895505 has 8 divisors (see below), whose sum is σ = 62524224. Its totient is φ = 41350000.

The previous prime is 51895499. The next prime is 51895523. The reversal of 51895505 is 50559815.

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

It is not a de Polignac number, because 51895505 - 2¹⁰ = 51894481 is a prime.

It is a Duffinian 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, 19421 + ... + 21930.

It is an arithmetic number, because the mean of its divisors is an integer number (7815528).

Almost surely, 2^51895505 is an apocalyptic number.

It is an amenable number.

51895505 is a deficient number, since it is larger than the sum of its proper divisors (10628719).

51895505 is a wasteful number, since it uses less digits than its factorization.

51895505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41607.

The product of its (nonzero) digits is 45000, while the sum is 38.

The square root of 51895505 is about 7203.8534826855. The cubic root of 51895505 is about 373.0009295906. Note that the first 3 decimals are identical.

The spelling of 51895505 in words is "fifty-one million, eight hundred ninety-five thousand, five hundred five".