51530033 has 8 divisors (see below), whose sum is σ = 54443520. Its totient is φ = 48636720.

The previous prime is 51529991. The next prime is 51530053. The reversal of 51530033 is 33003515.

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 51530033 - 2¹⁸ = 51267889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51529987 and 51530014.

It is not an unprimeable number, because it can be changed into a prime (51530053) 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, 368 + ... + 10158.

It is an arithmetic number, because the mean of its divisors is an integer number (6805440).

Almost surely, 2^51530033 is an apocalyptic number.

It is an amenable number.

51530033 is a deficient number, since it is larger than the sum of its proper divisors (2913487).

51530033 is a wasteful number, since it uses less digits than its factorization.

51530033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 51530033 is about 7178.4422404864. The cubic root of 51530033 is about 372.1232513515.

Adding to 51530033 its reverse (33003515), we get a palindrome (84533548).

The spelling of 51530033 in words is "fifty-one million, five hundred thirty thousand, thirty-three".