7253538 has 16 divisors (see below), whose sum is σ = 15007680. Its totient is φ = 2334416.

The previous prime is 7253537. The next prime is 7253539. The reversal of 7253538 is 8353527.

It is an interprime number because it is at equal distance from previous prime (7253537) and next prime (7253539).

It is a super-2 number, since 2×7253538² = 105227627034888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7253499 and 7253508.

It is not an unprimeable number, because it can be changed into a prime (7253531) 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, 20670 + ... + 21017.

It is an arithmetic number, because the mean of its divisors is an integer number (937980).

Almost surely, 2^7253538 is an apocalyptic number.

7253538 is an abundant number, since it is smaller than the sum of its proper divisors (7754142).

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

7253538 is a wasteful number, since it uses less digits than its factorization.

7253538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41721.

The product of its digits is 25200, while the sum is 33.

The square root of 7253538 is about 2693.2393135405. The cubic root of 7253538 is about 193.5753100415.

The spelling of 7253538 in words is "seven million, two hundred fifty-three thousand, five hundred thirty-eight".