51677517 has 4 divisors (see below), whose sum is σ = 68903360. Its totient is φ = 34451676.

The previous prime is 51677459. The next prime is 51677519. The reversal of 51677517 is 71577615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51677517 - 2⁶ = 51677453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51677519) 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, 8612917 + ... + 8612922.

It is an arithmetic number, because the mean of its divisors is an integer number (17225840).

Almost surely, 2^51677517 is an apocalyptic number.

It is an amenable number.

51677517 is a deficient number, since it is larger than the sum of its proper divisors (17225843).

51677517 is a wasteful number, since it uses less digits than its factorization.

51677517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17225842.

The product of its digits is 51450, while the sum is 39.

The square root of 51677517 is about 7188.7076029005. The cubic root of 51677517 is about 372.4779309178.

The spelling of 51677517 in words is "fifty-one million, six hundred seventy-seven thousand, five hundred seventeen".