2021461601 has 2 divisors, whose sum is σ = 2021461602. Its totient is φ = 2021461600.

The previous prime is 2021461591. The next prime is 2021461639. The reversal of 2021461601 is 1061641202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1470339025 + 551122576 = 38345^2 + 23476^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021461601 - 2⁶ = 2021461537 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021461201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010730800 + 1010730801.

It is an arithmetic number, because the mean of its divisors is an integer number (1010730801).

Almost surely, 2^2021461601 is an apocalyptic number.

It is an amenable number.

2021461601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021461601 is an equidigital number, since it uses as much as digits as its factorization.

2021461601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2021461601 is about 44960.6672659559. The cubic root of 2021461601 is about 1264.4116791228.

The spelling of 2021461601 in words is "two billion, twenty-one million, four hundred sixty-one thousand, six hundred one".