2046005021 has 4 divisors (see below), whose sum is σ = 2101302492. Its totient is φ = 1990707552.

The previous prime is 2046004999. The next prime is 2046005023. The reversal of 2046005021 is 1205006402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1205006402 = 2 ⋅602503201.

It can be written as a sum of positive squares in 2 ways, for example, as 1537502521 + 508502500 = 39211^2 + 22550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2046005021 - 2⁶ = 2046004957 is a prime.

It is a super-2 number, since 2×2046005021² = 8372273091914420882, 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 = 2046004984 and 2046005002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2046005023) 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, 27648680 + ... + 27648753.

It is an arithmetic number, because the mean of its divisors is an integer number (525325623).

Almost surely, 2^2046005021 is an apocalyptic number.

It is an amenable number.

2046005021 is a deficient number, since it is larger than the sum of its proper divisors (55297471).

2046005021 is an equidigital number, since it uses as much as digits as its factorization.

2046005021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55297470.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2046005021 is about 45232.7870134043. The cubic root of 2046005021 is about 1269.5083597254.

The spelling of 2046005021 in words is "two billion, forty-six million, five thousand, twenty-one".