7528449 has 4 divisors (see below), whose sum is σ = 10037936. Its totient is φ = 5018964.

The previous prime is 7528403. The next prime is 7528453. The reversal of 7528449 is 9448257.

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 not a de Polignac number, because 7528449 - 2¹⁶ = 7462913 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (7528489) 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, 1254739 + ... + 1254744.

It is an arithmetic number, because the mean of its divisors is an integer number (2509484).

It is a Proth number, since it is equal to 919 ⋅ 2¹³ + 1 and 919 < 2¹³.

Almost surely, 2^7528449 is an apocalyptic number.

It is an amenable number.

7528449 is a deficient number, since it is larger than the sum of its proper divisors (2509487).

7528449 is a wasteful number, since it uses less digits than its factorization.

7528449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509486.

The product of its digits is 80640, while the sum is 39.

The square root of 7528449 is about 2743.8019243378. The cubic root of 7528449 is about 195.9905677121.

The spelling of 7528449 in words is "seven million, five hundred twenty-eight thousand, four hundred forty-nine".