7255780 has 24 divisors (see below), whose sum is σ = 17414208. Its totient is φ = 2487648.

The previous prime is 7255763. The next prime is 7255783. The reversal of 7255780 is 875527.

It is not an unprimeable number, because it can be changed into a prime (7255783) 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, 25774 + ... + 26053.

It is an arithmetic number, because the mean of its divisors is an integer number (725592).

Almost surely, 2^7255780 is an apocalyptic number.

7255780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7255780 is an abundant number, since it is smaller than the sum of its proper divisors (10158428).

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

7255780 is a wasteful number, since it uses less digits than its factorization.

7255780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51843 (or 51841 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 7255780 is about 2693.6555087836. The cubic root of 7255780 is about 193.5952520863.

The spelling of 7255780 in words is "seven million, two hundred fifty-five thousand, seven hundred eighty".