2661351 has 32 divisors (see below), whose sum is σ = 4548096. Its totient is φ = 1344000.

The previous prime is 2661341. The next prime is 2661371. The reversal of 2661351 is 1531662.

It is not a de Polignac number, because 2661351 - 2⁹ = 2660839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661331) 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 31 ways as a sum of consecutive naturals, for example, 9331 + ... + 9611.

It is an arithmetic number, because the mean of its divisors is an integer number (142128).

2^2661351 is an apocalyptic number.

2661351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2661351 is a deficient number, since it is larger than the sum of its proper divisors (1886745).

2661351 is a wasteful number, since it uses less digits than its factorization.

2661351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

The product of its digits is 1080, while the sum is 24.

The square root of 2661351 is about 1631.3647660778. The cubic root of 2661351 is about 138.5800516424.

The spelling of 2661351 in words is "two million, six hundred sixty-one thousand, three hundred fifty-one".