2601391 has 16 divisors (see below), whose sum is σ = 3024000. Its totient is φ = 2216448.

The previous prime is 2601383. The next prime is 2601413. The reversal of 2601391 is 1931062.

It is not a de Polignac number, because 2601391 - 2³ = 2601383 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601301) 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, 17385 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

2^2601391 is an apocalyptic number.

2601391 is a deficient number, since it is larger than the sum of its proper divisors (422609).

2601391 is a wasteful number, since it uses less digits than its factorization.

2601391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2601391 is about 1612.8828227742. The cubic root of 2601391 is about 137.5314043971.

It can be divided in two parts, 2601 and 391, that added together give a palindrome (2992).

The spelling of 2601391 in words is "two million, six hundred one thousand, three hundred ninety-one".