51275893 has 4 divisors (see below), whose sum is σ = 54292140. Its totient is φ = 48259648.

The previous prime is 51275881. The next prime is 51275911. The reversal of 51275893 is 39857215.

51275893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39857215 = 5 ⋅7971443.

It can be written as a sum of positive squares in 2 ways, for example, as 21003889 + 30272004 = 4583^2 + 5502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51275893 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51275863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508098 + ... + 1508131.

It is an arithmetic number, because the mean of its divisors is an integer number (13573035).

Almost surely, 2^51275893 is an apocalyptic number.

It is an amenable number.

51275893 is a deficient number, since it is larger than the sum of its proper divisors (3016247).

51275893 is a wasteful number, since it uses less digits than its factorization.

51275893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016246.

The product of its digits is 75600, while the sum is 40.

The square root of 51275893 is about 7160.7187488408. The cubic root of 51275893 is about 371.5104869977.

The spelling of 51275893 in words is "fifty-one million, two hundred seventy-five thousand, eight hundred ninety-three".