51504897 has 8 divisors (see below), whose sum is σ = 70348320. Its totient is φ = 33499040.

The previous prime is 51504881. The next prime is 51504907. The reversal of 51504897 is 79840515.

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 51504897 - 2⁴ = 51504881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51504197) 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, 209247 + ... + 209492.

It is an arithmetic number, because the mean of its divisors is an integer number (8793540).

Almost surely, 2^51504897 is an apocalyptic number.

It is an amenable number.

51504897 is a deficient number, since it is larger than the sum of its proper divisors (18843423).

51504897 is a wasteful number, since it uses less digits than its factorization.

51504897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418783.

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

The square root of 51504897 is about 7176.6912292504. The cubic root of 51504897 is about 372.0627351127.

The spelling of 51504897 in words is "fifty-one million, five hundred four thousand, eight hundred ninety-seven".