2261567 has 16 divisors (see below), whose sum is σ = 2944512.
Its totient is φ = 1684320.
The previous prime is 2261557. The next prime is 2261569. The reversal of 2261567 is 7651622.
It is not a de Polignac number, because 2261567 - 26 = 2261503 is a prime.
It is a super-2 number, since 2×22615672 = 10229370590978, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2261569) 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, 1133 + ... + 2409.
It is an arithmetic number, because the mean of its divisors is an integer number (184032).
22261567 is an apocalyptic number.
2261567 is a deficient number, since it is larger than the sum of its proper divisors (682945).
2261567 is a wasteful number, since it uses less digits than its factorization.
2261567 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1318.
The product of its digits is 5040, while the sum is 29.
The square root of 2261567 is about 1503.8507239750.
The cubic root of 2261567 is about 131.2612350171.
The spelling of 2261567 in words is "two million, two hundred sixty-one thousand, five hundred sixty-seven".