2257520 has 20 divisors (see below), whose sum is σ = 5248920. Its totient is φ = 902976.

The previous prime is 2257511. The next prime is 2257529. The reversal of 2257520 is 257522.

It is an interprime number because it is at equal distance from previous prime (2257511) and next prime (2257529).

It is a tau number, because it is divible by the number of its divisors (20).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257529) 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, 14030 + ... + 14189.

It is an arithmetic number, because the mean of its divisors is an integer number (262446).

2^2257520 is an apocalyptic number.

2257520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2257520 is an abundant number, since it is smaller than the sum of its proper divisors (2991400).

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

2257520 is a wasteful number, since it uses less digits than its factorization.

2257520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28232 (or 28226 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2257520 is about 1502.5045757002. The cubic root of 2257520 is about 131.1828923758.

The spelling of 2257520 in words is "two million, two hundred fifty-seven thousand, five hundred twenty".