51450505 has 8 divisors (see below), whose sum is σ = 62610624. Its totient is φ = 40580400.

The previous prime is 51450493. The next prime is 51450527. The reversal of 51450505 is 50505415.

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

It is not a de Polignac number, because 51450505 - 2¹¹ = 51448457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51450505.

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, 72111 + ... + 72820.

It is an arithmetic number, because the mean of its divisors is an integer number (7826328).

Almost surely, 2^51450505 is an apocalyptic number.

It is an amenable number.

51450505 is a deficient number, since it is larger than the sum of its proper divisors (11160119).

51450505 is a wasteful number, since it uses less digits than its factorization.

51450505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145007.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 51450505 is about 7172.9007381951. The cubic root of 51450505 is about 371.9317160865.

The spelling of 51450505 in words is "fifty-one million, four hundred fifty thousand, five hundred five".