7523545 has 8 divisors (see below), whose sum is σ = 9319680. Its totient is φ = 5824560.

The previous prime is 7523539. The next prime is 7523561. The reversal of 7523545 is 5453257.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7523545 - 2⁵ = 7523513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an Ulam number.

7523545 is a lucky number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24115 + ... + 24424.

It is an arithmetic number, because the mean of its divisors is an integer number (1164960).

Almost surely, 2^7523545 is an apocalyptic number.

It is an amenable number.

7523545 is a deficient number, since it is larger than the sum of its proper divisors (1796135).

7523545 is a wasteful number, since it uses less digits than its factorization.

7523545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48575.

The product of its digits is 21000, while the sum is 31.

The square root of 7523545 is about 2742.9081282464. The cubic root of 7523545 is about 195.9480026582.

The spelling of 7523545 in words is "seven million, five hundred twenty-three thousand, five hundred forty-five".