2471261 has 4 divisors (see below), whose sum is σ = 2661372. Its totient is φ = 2281152.

The previous prime is 2471257. The next prime is 2471299. The reversal of 2471261 is 1621742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1621742 = 2 ⋅810871.

It can be written as a sum of positive squares in 2 ways, for example, as 1705636 + 765625 = 1306^2 + 875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2471261 - 2² = 2471257 is a prime.

It is a super-2 number, since 2×2471261² = 12214261860242, 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 (2471201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95036 + ... + 95061.

It is an arithmetic number, because the mean of its divisors is an integer number (665343).

2^2471261 is an apocalyptic number.

It is an amenable number.

2471261 is a deficient number, since it is larger than the sum of its proper divisors (190111).

2471261 is a wasteful number, since it uses less digits than its factorization.

2471261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190110.

The product of its digits is 672, while the sum is 23.

The square root of 2471261 is about 1572.0244909034. The cubic root of 2471261 is about 135.1988108680.

The spelling of 2471261 in words is "two million, four hundred seventy-one thousand, two hundred sixty-one".