2553240 has 32 divisors (see below), whose sum is σ = 7660080. Its totient is φ = 680832.

The previous prime is 2553233. The next prime is 2553241. The reversal of 2553240 is 423552.

2553240 is nontrivially palindromic in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10519 + ... + 10758.

2^2553240 is an apocalyptic number.

2553240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2553240 is an abundant number, since it is smaller than the sum of its proper divisors (5106840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2553240 is a wasteful number, since it uses less digits than its factorization.

2553240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21291 (or 21287 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 2553240 is about 1597.8861035756. The cubic root of 2553240 is about 136.6775587855.

Adding to 2553240 its reverse (423552), we get a palindrome (2976792).

It can be divided in two parts, 25 and 53240, that multiplied together give a cube (1331000 = 110³).

The spelling of 2553240 in words is "two million, five hundred fifty-three thousand, two hundred forty".