56035021 has 4 divisors (see below), whose sum is σ = 64040032. Its totient is φ = 48030012.

The previous prime is 56035003. The next prime is 56035033. The reversal of 56035021 is 12053065.

It is a happy number.

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: 12053065 = 5 ⋅2410613.

It is a cyclic number.

It is not a de Polignac number, because 56035021 - 2¹¹ = 56032973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56034983 and 56035001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56035051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4002495 + ... + 4002508.

It is an arithmetic number, because the mean of its divisors is an integer number (16010008).

Almost surely, 2^56035021 is an apocalyptic number.

It is an amenable number.

56035021 is a deficient number, since it is larger than the sum of its proper divisors (8005011).

56035021 is an equidigital number, since it uses as much as digits as its factorization.

56035021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8005010.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 56035021 is about 7485.6543468156. The cubic root of 56035021 is about 382.6659732242.

Adding to 56035021 its reverse (12053065), we get a palindrome (68088086).

The spelling of 56035021 in words is "fifty-six million, thirty-five thousand, twenty-one".