2149261 has 16 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 1900800.

The previous prime is 2149249. The next prime is 2149283. The reversal of 2149261 is 1629412.

It is a cyclic number.

It is not a de Polignac number, because 2149261 - 2¹¹ = 2147213 is a prime.

It is a super-2 number, since 2×2149261² = 9238645692242, 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 (2149211) 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, 24105 + ... + 24193.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

2^2149261 is an apocalyptic number.

It is an amenable number.

2149261 is a deficient number, since it is larger than the sum of its proper divisors (269939).

2149261 is a wasteful number, since it uses less digits than its factorization.

2149261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180.

The product of its digits is 864, while the sum is 25.

The square root of 2149261 is about 1466.0358112952. The cubic root of 2149261 is about 129.0514987779.

The spelling of 2149261 in words is "two million, one hundred forty-nine thousand, two hundred sixty-one".