51771677 has 4 divisors (see below), whose sum is σ = 52179456. Its totient is φ = 51363900.

The previous prime is 51771667. The next prime is 51771679. The reversal of 51771677 is 77617715.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51771677 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 (51771679) 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, 203699 + ... + 203952.

It is an arithmetic number, because the mean of its divisors is an integer number (13044864).

Almost surely, 2^51771677 is an apocalyptic number.

It is an amenable number.

51771677 is a deficient number, since it is larger than the sum of its proper divisors (407779).

51771677 is a wasteful number, since it uses less digits than its factorization.

51771677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407778.

The product of its digits is 72030, while the sum is 41.

The square root of 51771677 is about 7195.2537828766. The cubic root of 51771677 is about 372.7040204827.

The spelling of 51771677 in words is "fifty-one million, seven hundred seventy-one thousand, six hundred seventy-seven".