2561461 has 8 divisors (see below), whose sum is σ = 2957184. Its totient is φ = 2173200.

The previous prime is 2561431. The next prime is 2561491. The reversal of 2561461 is 1641652.

It is an interprime number because it is at equal distance from previous prime (2561431) and next prime (2561491).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2561461 - 2²¹ = 464309 is a prime.

It is a super-2 number, since 2×2561461² = 13122164909042, which contains 22 as substring.

It is a Duffinian number.

2561461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105 + ... + 2518.

It is an arithmetic number, because the mean of its divisors is an integer number (369648).

2^2561461 is an apocalyptic number.

It is an amenable number.

2561461 is a deficient number, since it is larger than the sum of its proper divisors (395723).

2561461 is a wasteful number, since it uses less digits than its factorization.

2561461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731.

The product of its digits is 1440, while the sum is 25.

The square root of 2561461 is about 1600.4564973782. The cubic root of 2561461 is about 136.8240944815.

The spelling of 2561461 in words is "two million, five hundred sixty-one thousand, four hundred sixty-one".