51262693 has 4 divisors (see below), whose sum is σ = 51343308. Its totient is φ = 51182080.

The previous prime is 51262663. The next prime is 51262697. The reversal of 51262693 is 39626215.

51262693 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.

It can be written as a sum of positive squares in 2 ways, for example, as 35438209 + 15824484 = 5953^2 + 3978^2 .

It is a cyclic number.

It is not a de Polignac number, because 51262693 - 2⁹ = 51262181 is a prime.

It is a super-2 number, since 2×51262693² = 5255727387224498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51262697) 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, 39346 + ... + 40627.

It is an arithmetic number, because the mean of its divisors is an integer number (12835827).

Almost surely, 2^51262693 is an apocalyptic number.

It is an amenable number.

51262693 is a deficient number, since it is larger than the sum of its proper divisors (80615).

51262693 is an equidigital number, since it uses as much as digits as its factorization.

51262693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80614.

The product of its digits is 19440, while the sum is 34.

The square root of 51262693 is about 7159.7969943288. The cubic root of 51262693 is about 371.4786048336.

The spelling of 51262693 in words is "fifty-one million, two hundred sixty-two thousand, six hundred ninety-three".