2557232 has 20 divisors (see below), whose sum is σ = 5170800. Its totient is φ = 1222848.

The previous prime is 2557231. The next prime is 2557241. The reversal of 2557232 is 2327552.

It is a d-powerful number, because it can be written as 2⁴ + 5⁵ + 5⁸ + 7² + 2¹⁶ + 3⁶ + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557231) 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, 3107 + ... + 3842.

It is an arithmetic number, because the mean of its divisors is an integer number (258540).

2^2557232 is an apocalyptic number.

It is an amenable number.

2557232 is an abundant number, since it is smaller than the sum of its proper divisors (2613568).

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

2557232 is a wasteful number, since it uses less digits than its factorization.

2557232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980 (or 6974 counting only the distinct ones).

The product of its digits is 4200, while the sum is 26.

The square root of 2557232 is about 1599.1347660532. The cubic root of 2557232 is about 136.7487536469.

It can be divided in two parts, 255 and 7232, that multiplied together give a triangular number (1844160 = T₁₉₂₀).

The spelling of 2557232 in words is "two million, five hundred fifty-seven thousand, two hundred thirty-two".