51566023 has 8 divisors (see below), whose sum is σ = 54332928. Its totient is φ = 48842904.

The previous prime is 51565967. The next prime is 51566027. The reversal of 51566023 is 32066515.

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 51566023 - 2⁹ = 51565511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51565982 and 51566000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51566027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8515 + ... + 13252.

It is an arithmetic number, because the mean of its divisors is an integer number (6791616).

Almost surely, 2^51566023 is an apocalyptic number.

51566023 is a deficient number, since it is larger than the sum of its proper divisors (2766905).

51566023 is a wasteful number, since it uses less digits than its factorization.

51566023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21893.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 51566023 is about 7180.9486142153. The cubic root of 51566023 is about 372.2098649132.

The spelling of 51566023 in words is "fifty-one million, five hundred sixty-six thousand, twenty-three".