2261566141 has 4 divisors (see below), whose sum is σ = 2262359484. Its totient is φ = 2260772800.

The previous prime is 2261566081. The next prime is 2261566169. The reversal of 2261566141 is 1416651622.

2261566141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1416651622 = 2 ⋅708325811.

It can be written as a sum of positive squares in 2 ways, for example, as 1797336025 + 464230116 = 42395^2 + 21546^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261566141 - 2⁹ = 2261565629 is a prime.

It is a super-2 number, since 2×2261566141² = 10229362820235263762, 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 = 2261566097 and 2261566106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261066141) 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, 392380 + ... + 398101.

It is an arithmetic number, because the mean of its divisors is an integer number (565589871).

Almost surely, 2^2261566141 is an apocalyptic number.

It is an amenable number.

2261566141 is a deficient number, since it is larger than the sum of its proper divisors (793343).

2261566141 is an equidigital number, since it uses as much as digits as its factorization.

2261566141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793342.

The product of its digits is 17280, while the sum is 34.

The square root of 2261566141 is about 47555.9264550697. The cubic root of 2261566141 is about 1312.6121839832.

The spelling of 2261566141 in words is "two billion, two hundred sixty-one million, five hundred sixty-six thousand, one hundred forty-one".