2521021061 has 16 divisors (see below), whose sum is σ = 2894035200. Its totient is φ = 2176694208.

The previous prime is 2521021051. The next prime is 2521021117. The reversal of 2521021061 is 1601201252.

It is not a de Polignac number, because 2521021061 - 2²² = 2516826757 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 (2521021051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45086 + ... + 84111.

It is an arithmetic number, because the mean of its divisors is an integer number (180877200).

Almost surely, 2^2521021061 is an apocalyptic number.

It is an amenable number.

2521021061 is a deficient number, since it is larger than the sum of its proper divisors (373014139).

2521021061 is a wasteful number, since it uses less digits than its factorization.

2521021061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129308.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2521021061 is about 50209.7705730668. The cubic root of 2521021061 is about 1361.0021918412.

The spelling of 2521021061 in words is "two billion, five hundred twenty-one million, twenty-one thousand, sixty-one".