56010621 has 4 divisors (see below), whose sum is σ = 74680832. Its totient is φ = 37340412.

The previous prime is 56010611. The next prime is 56010623. The reversal of 56010621 is 12601065.

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.

It is not a de Polignac number, because 56010621 - 2⁶ = 56010557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56010623) 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 3 ways as a sum of consecutive naturals, for example, 9335101 + ... + 9335106.

It is an arithmetic number, because the mean of its divisors is an integer number (18670208).

Almost surely, 2^56010621 is an apocalyptic number.

It is an amenable number.

56010621 is a deficient number, since it is larger than the sum of its proper divisors (18670211).

56010621 is a wasteful number, since it uses less digits than its factorization.

56010621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18670210.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 56010621 is about 7484.0243853157. The cubic root of 56010621 is about 382.6104222185.

Adding to 56010621 its reverse (12601065), we get a palindrome (68611686).

The spelling of 56010621 in words is "fifty-six million, ten thousand, six hundred twenty-one".