2601021061 has 4 divisors (see below), whose sum is σ = 2601247072. Its totient is φ = 2600795052.

The previous prime is 2601021053. The next prime is 2601021083. The reversal of 2601021061 is 1601201062.

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 a cyclic number.

It is not a de Polignac number, because 2601021061 - 2³ = 2601021053 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 (2601021011) 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, 94761 + ... + 119086.

It is an arithmetic number, because the mean of its divisors is an integer number (650311768).

Almost surely, 2^2601021061 is an apocalyptic number.

It is an amenable number.

2601021061 is a deficient number, since it is larger than the sum of its proper divisors (226011).

2601021061 is a wasteful number, since it uses less digits than its factorization.

2601021061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226010.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2601021061 is about 51000.2064799742. The cubic root of 2601021061 is about 1375.2488472585.

The spelling of 2601021061 in words is "two billion, six hundred one million, twenty-one thousand, sixty-one".