51093587 has 4 divisors (see below), whose sum is σ = 51959640. Its totient is φ = 50227536.

The previous prime is 51093583. The next prime is 51093593. The reversal of 51093587 is 78539015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78539015 = 5 ⋅15707803.

It is a cyclic number.

It is not a de Polignac number, because 51093587 - 2² = 51093583 is a prime.

It is a super-2 number, since 2×51093587² = 5221109265053138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51093587.

It is not an unprimeable number, because it can be changed into a prime (51093583) 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, 432938 + ... + 433055.

It is an arithmetic number, because the mean of its divisors is an integer number (12989910).

Almost surely, 2^51093587 is an apocalyptic number.

51093587 is a deficient number, since it is larger than the sum of its proper divisors (866053).

51093587 is an equidigital number, since it uses as much as digits as its factorization.

51093587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866052.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 51093587 is about 7147.9778259309. The cubic root of 51093587 is about 371.0696754514.

The spelling of 51093587 in words is "fifty-one million, ninety-three thousand, five hundred eighty-seven".