51330023 has 8 divisors (see below), whose sum is σ = 53018928. Its totient is φ = 49667904.

The previous prime is 51330007. The next prime is 51330031. The reversal of 51330023 is 32003315.

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 51330023 - 2⁴ = 51330007 is a prime.

It is a super-2 number, since 2×51330023² = 5269542522361058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51329983 and 51330010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51332023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2765 + ... + 10502.

It is an arithmetic number, because the mean of its divisors is an integer number (6627366).

Almost surely, 2^51330023 is an apocalyptic number.

51330023 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

51330023 is a deficient number, since it is larger than the sum of its proper divisors (1688905).

51330023 is a wasteful number, since it uses less digits than its factorization.

51330023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13393.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 51330023 is about 7164.4974003764. The cubic root of 51330023 is about 371.6411708287.

Adding to 51330023 its reverse (32003315), we get a palindrome (83333338).

The spelling of 51330023 in words is "fifty-one million, three hundred thirty thousand, twenty-three".