51000377 has 4 divisors (see below), whose sum is σ = 51053556. Its totient is φ = 50947200.

The previous prime is 51000371. The next prime is 51000379. The reversal of 51000377 is 77300015.

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 45751696 + 5248681 = 6764^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 51000377 - 2¹⁰ = 50999353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51000371) 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, 25124 + ... + 27077.

It is an arithmetic number, because the mean of its divisors is an integer number (12763389).

Almost surely, 2^51000377 is an apocalyptic number.

It is an amenable number.

51000377 is a deficient number, since it is larger than the sum of its proper divisors (53179).

51000377 is an equidigital number, since it uses as much as digits as its factorization.

51000377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53178.

The product of its (nonzero) digits is 735, while the sum is 23.

The square root of 51000377 is about 7141.4548237737. The cubic root of 51000377 is about 370.8438907009.

The spelling of 51000377 in words is "fifty-one million, three hundred seventy-seven", and thus it is an aban number.