56990033 has 4 divisors (see below), whose sum is σ = 57034560. Its totient is φ = 56945508.

The previous prime is 56989979. The next prime is 56990039. The reversal of 56990033 is 33009965.

56990033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33009965 = 5 ⋅6601993.

It is a cyclic number.

It is not a de Polignac number, because 56990033 - 2⁶ = 56989969 is a prime.

It is a super-2 number, since 2×56990033² = 6495727722682178, 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 = 56989975 and 56990002.

It is not an unprimeable number, because it can be changed into a prime (56990039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20285 + ... + 22922.

It is an arithmetic number, because the mean of its divisors is an integer number (14258640).

Almost surely, 2^56990033 is an apocalyptic number.

It is an amenable number.

56990033 is a deficient number, since it is larger than the sum of its proper divisors (44527).

56990033 is a wasteful number, since it uses less digits than its factorization.

56990033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44526.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 56990033 is about 7549.1743257127. The cubic root of 56990033 is about 384.8276802348.

Adding to 56990033 its reverse (33009965), we get a palindrome (89999998).

The spelling of 56990033 in words is "fifty-six million, nine hundred ninety thousand, thirty-three".