7255381 has 12 divisors (see below), whose sum is σ = 8487072. Its totient is φ = 6184248.

The previous prime is 7255357. The next prime is 7255403. The reversal of 7255381 is 1835527.

It is not a de Polignac number, because 7255381 - 2⁷ = 7255253 is a prime.

It is a super-2 number, since 2×7255381² = 105281106910322, which contains 22 as substring.

It is a Duffinian number.

7255381 is a Rhonda number in base 10.

Its product of digits (8400) is a multiple of the sum of its prime factors (840).

7255381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7255301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12606 + ... + 13168.

It is an arithmetic number, because the mean of its divisors is an integer number (707256).

Almost surely, 2^7255381 is an apocalyptic number.

It is an amenable number.

7255381 is a deficient number, since it is larger than the sum of its proper divisors (1231691).

7255381 is a wasteful number, since it uses less digits than its factorization.

7255381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 833 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 7255381 is about 2693.5814448425. The cubic root of 7255381 is about 193.5917033788.

The spelling of 7255381 in words is "seven million, two hundred fifty-five thousand, three hundred eighty-one".