51808495 has 8 divisors (see below), whose sum is σ = 62228160. Its totient is φ = 41408160.

The previous prime is 51808457. The next prime is 51808499. The reversal of 51808495 is 59480815.

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

It is not a de Polignac number, because 51808495 - 2¹³ = 51800303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51808499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930 + ... + 10360.

It is an arithmetic number, because the mean of its divisors is an integer number (7778520).

Almost surely, 2^51808495 is an apocalyptic number.

51808495 is a deficient number, since it is larger than the sum of its proper divisors (10419665).

51808495 is a wasteful number, since it uses less digits than its factorization.

51808495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 51808495 is about 7197.8118202687. The cubic root of 51808495 is about 372.7923504075.

The spelling of 51808495 in words is "fifty-one million, eight hundred eight thousand, four hundred ninety-five".