1000056021 has 8 divisors (see below), whose sum is σ = 1355267424. Its totient is φ = 655774320.

The previous prime is 1000056011. The next prime is 1000056041. The reversal of 1000056021 is 1206500001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1000056021 - 2¹¹ = 1000053973 is a prime.

It is a super-2 number, since 2×1000056021² = 2000224090276704882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000056011) 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, 2732211 + ... + 2732576.

It is an arithmetic number, because the mean of its divisors is an integer number (169408428).

Almost surely, 2^1000056021 is an apocalyptic number.

It is an amenable number.

1000056021 is a deficient number, since it is larger than the sum of its proper divisors (355211403).

1000056021 is an equidigital number, since it uses as much as digits as its factorization.

1000056021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464851.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1000056021 is about 31623.6623590627. The cubic root of 1000056021 is about 1000.0186733180.

Adding to 1000056021 its reverse (1206500001), we get a palindrome (2206556022).

The spelling of 1000056021 in words is "one billion, fifty-six thousand, twenty-one".