51533123 has 8 divisors (see below), whose sum is σ = 52440528. Its totient is φ = 50632704.

The previous prime is 51533113. The next prime is 51533143. The reversal of 51533123 is 32133515.

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 51533123 - 2⁴ = 51533107 is a prime.

It is a super-2 number, since 2×51533123² = 5311325532266258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51533113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14411 + ... + 17627.

It is an arithmetic number, because the mean of its divisors is an integer number (6555066).

Almost surely, 2^51533123 is an apocalyptic number.

51533123 is a deficient number, since it is larger than the sum of its proper divisors (907405).

51533123 is a wasteful number, since it uses less digits than its factorization.

51533123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493.

The product of its digits is 1350, while the sum is 23.

The square root of 51533123 is about 7178.6574650139. The cubic root of 51533123 is about 372.1306893302.

Adding to 51533123 its reverse (32133515), we get a palindrome (83666638).

The spelling of 51533123 in words is "fifty-one million, five hundred thirty-three thousand, one hundred twenty-three".