2651231 has 6 divisors (see below), whose sum is σ = 2914296. Its totient is φ = 2410100.

The previous prime is 2651197. The next prime is 2651237. The reversal of 2651231 is 1321562.

It is a de Polignac number, because none of the positive numbers 2^k-2651231 is a prime.

It is a super-2 number, since 2×2651231² = 14058051630722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10835 + ... + 11076.

It is an arithmetic number, because the mean of its divisors is an integer number (485716).

2^2651231 is an apocalyptic number.

2651231 is a deficient number, since it is larger than the sum of its proper divisors (263065).

2651231 is a wasteful number, since it uses less digits than its factorization.

2651231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21933 (or 21922 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 2651231 is about 1628.2601143552. The cubic root of 2651231 is about 138.4041746154.

Adding to 2651231 its reverse (1321562), we get a palindrome (3972793).

It can be divided in two parts, 2651 and 231, that added together give a palindrome (2882).

The spelling of 2651231 in words is "two million, six hundred fifty-one thousand, two hundred thirty-one".