51380761 has 8 divisors (see below), whose sum is σ = 52093440. Its totient is φ = 50672832.

The previous prime is 51380737. The next prime is 51380789. The reversal of 51380761 is 16708315.

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 51380761 - 2⁷ = 51380633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51380701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24180 + ... + 26218.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^51380761 is an apocalyptic number.

It is an amenable number.

51380761 is a deficient number, since it is larger than the sum of its proper divisors (712679).

51380761 is a wasteful number, since it uses less digits than its factorization.

51380761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 51380761 is about 7168.0374580494. The cubic root of 51380761 is about 371.7635821004.

The spelling of 51380761 in words is "fifty-one million, three hundred eighty thousand, seven hundred sixty-one".