51830897 has 4 divisors (see below), whose sum is σ = 52094196. Its totient is φ = 51567600.

The previous prime is 51830893. The next prime is 51830899. The reversal of 51830897 is 79803815.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47665216 + 4165681 = 6904^2 + 2041^2 .

It is a cyclic number.

It is not a de Polignac number, because 51830897 - 2² = 51830893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51830893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131354 + ... + 131747.

It is an arithmetic number, because the mean of its divisors is an integer number (13023549).

Almost surely, 2^51830897 is an apocalyptic number.

It is an amenable number.

51830897 is a deficient number, since it is larger than the sum of its proper divisors (263299).

51830897 is a wasteful number, since it uses less digits than its factorization.

51830897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263298.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 51830897 is about 7199.3678194686. The cubic root of 51830897 is about 372.8460744851.

The spelling of 51830897 in words is "fifty-one million, eight hundred thirty thousand, eight hundred ninety-seven".