7472509 has 4 divisors (see below), whose sum is σ = 8151840. Its totient is φ = 6793180.

The previous prime is 7472489. The next prime is 7472513. The reversal of 7472509 is 9052747.

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 a cyclic number.

It is not a de Polignac number, because 7472509 - 2¹¹ = 7470461 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7472579) 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, 339649 + ... + 339670.

It is an arithmetic number, because the mean of its divisors is an integer number (2037960).

Almost surely, 2^7472509 is an apocalyptic number.

It is an amenable number.

7472509 is a deficient number, since it is larger than the sum of its proper divisors (679331).

7472509 is a wasteful number, since it uses less digits than its factorization.

7472509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679330.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 7472509 is about 2733.5890327553. The cubic root of 7472509 is about 195.5039256325.

The spelling of 7472509 in words is "seven million, four hundred seventy-two thousand, five hundred nine".