7285513 has 4 divisors (see below), whose sum is σ = 7394320. Its totient is φ = 7176708.

The previous prime is 7285507. The next prime is 7285519. The reversal of 7285513 is 3155827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (7285507) and next prime (7285519).

It is a cyclic number.

It is not a de Polignac number, because 7285513 - 2⁹ = 7285001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7285519) 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, 54303 + ... + 54436.

It is an arithmetic number, because the mean of its divisors is an integer number (1848580).

Almost surely, 2^7285513 is an apocalyptic number.

It is an amenable number.

7285513 is a deficient number, since it is larger than the sum of its proper divisors (108807).

7285513 is a wasteful number, since it uses less digits than its factorization.

7285513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108806.

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

The square root of 7285513 is about 2699.1689461758. The cubic root of 7285513 is about 193.8593322573.

It can be divided in two parts, 728 and 5513, that added together give a square (6241 = 79²).

The spelling of 7285513 in words is "seven million, two hundred eighty-five thousand, five hundred thirteen".