51377867 has 8 divisors (see below), whose sum is σ = 53024592. Its totient is φ = 49744800.

The previous prime is 51377863. The next prime is 51377873. The reversal of 51377867 is 76877315.

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 51377867 - 2² = 51377863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51377863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4517 + ... + 11097.

It is an arithmetic number, because the mean of its divisors is an integer number (6628074).

Almost surely, 2^51377867 is an apocalyptic number.

51377867 is a deficient number, since it is larger than the sum of its proper divisors (1646725).

51377867 is a wasteful number, since it uses less digits than its factorization.

51377867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829.

The product of its digits is 246960, while the sum is 44.

The square root of 51377867 is about 7167.8355868421. The cubic root of 51377867 is about 371.7566021596.

The spelling of 51377867 in words is "fifty-one million, three hundred seventy-seven thousand, eight hundred sixty-seven".