51677497 has 4 divisors (see below), whose sum is σ = 51695140. Its totient is φ = 51659856.

The previous prime is 51677459. The next prime is 51677519. The reversal of 51677497 is 79477615.

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 37994896 + 13682601 = 6164^2 + 3699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51677497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51677407) 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 3 ways as a sum of consecutive naturals, for example, 3258 + ... + 10675.

It is an arithmetic number, because the mean of its divisors is an integer number (12923785).

Almost surely, 2^51677497 is an apocalyptic number.

It is an amenable number.

51677497 is a deficient number, since it is larger than the sum of its proper divisors (17643).

51677497 is a wasteful number, since it uses less digits than its factorization.

51677497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642.

The product of its digits is 370440, while the sum is 46.

The square root of 51677497 is about 7188.7062118298. The cubic root of 51677497 is about 372.4778828662.

The spelling of 51677497 in words is "fifty-one million, six hundred seventy-seven thousand, four hundred ninety-seven".