51230533 has 8 divisors (see below), whose sum is σ = 53139960. Its totient is φ = 49348800.

The previous prime is 51230519. The next prime is 51230539. The reversal of 51230533 is 33503215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41383489 + 9847044 = 6433^2 + 3138^2 .

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 51230533 - 2⁹ = 51230021 is a prime.

It is a super-2 number, since 2×51230533² = 5249135022928178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51230539) 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, 3118 + ... + 10591.

It is an arithmetic number, because the mean of its divisors is an integer number (6642495).

Almost surely, 2^51230533 is an apocalyptic number.

It is an amenable number.

51230533 is a deficient number, since it is larger than the sum of its proper divisors (1909427).

51230533 is a wasteful number, since it uses less digits than its factorization.

51230533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13847.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 51230533 is about 7157.5507682447. The cubic root of 51230533 is about 371.4009053710.

Adding to 51230533 its reverse (33503215), we get a palindrome (84733748).

The spelling of 51230533 in words is "fifty-one million, two hundred thirty thousand, five hundred thirty-three".