2533631 has 4 divisors (see below), whose sum is σ = 2667000. Its totient is φ = 2400264.

The previous prime is 2533627. The next prime is 2533651. The reversal of 2533631 is 1363352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2533631 - 2² = 2533627 is a prime.

It is a super-2 number, since 2×2533631² = 12838572088322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2533597 and 2533606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66656 + ... + 66693.

It is an arithmetic number, because the mean of its divisors is an integer number (666750).

2^2533631 is an apocalyptic number.

2533631 is a deficient number, since it is larger than the sum of its proper divisors (133369).

2533631 is a wasteful number, since it uses less digits than its factorization.

2533631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133368.

The product of its digits is 1620, while the sum is 23.

The square root of 2533631 is about 1591.7383578968. The cubic root of 2533631 is about 136.3267625687.

Adding to 2533631 its reverse (1363352), we get a palindrome (3896983).

The spelling of 2533631 in words is "two million, five hundred thirty-three thousand, six hundred thirty-one".