51923563 has 4 divisors (see below), whose sum is σ = 51965440. Its totient is φ = 51881688.

The previous prime is 51923551. The next prime is 51923591. The reversal of 51923563 is 36532915.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51923563 - 2⁹ = 51923051 is a prime.

It is a super-2 number, since 2×51923563² = 5392112789229938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51927563) 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, 19020 + ... + 21577.

It is an arithmetic number, because the mean of its divisors is an integer number (12991360).

Almost surely, 2^51923563 is an apocalyptic number.

51923563 is a deficient number, since it is larger than the sum of its proper divisors (41877).

51923563 is a wasteful number, since it uses less digits than its factorization.

51923563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41876.

The product of its digits is 24300, while the sum is 34.

The square root of 51923563 is about 7205.8006494768. The cubic root of 51923563 is about 373.0681401291.

The spelling of 51923563 in words is "fifty-one million, nine hundred twenty-three thousand, five hundred sixty-three".