51486323 has 4 divisors (see below), whose sum is σ = 58841520. Its totient is φ = 44131128.

The previous prime is 51486317. The next prime is 51486329. The reversal of 51486323 is 32368415.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51486317) and next prime (51486329).

It is a cyclic number.

It is not a de Polignac number, because 51486323 - 2²⁰ = 50437747 is a prime.

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 51486323.

It is not an unprimeable number, because it can be changed into a prime (51486329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3677588 + ... + 3677601.

It is an arithmetic number, because the mean of its divisors is an integer number (14710380).

Almost surely, 2^51486323 is an apocalyptic number.

51486323 is a deficient number, since it is larger than the sum of its proper divisors (7355197).

51486323 is an equidigital number, since it uses as much as digits as its factorization.

51486323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355196.

The product of its digits is 17280, while the sum is 32.

The square root of 51486323 is about 7175.3970621841. The cubic root of 51486323 is about 372.0180045820.

The spelling of 51486323 in words is "fifty-one million, four hundred eighty-six thousand, three hundred twenty-three".