7520537 has 4 divisors (see below), whose sum is σ = 7540260. Its totient is φ = 7500816.

The previous prime is 7520503. The next prime is 7520543. The reversal of 7520537 is 7350257.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4734976 + 2785561 = 2176^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 7520537 - 2¹⁰ = 7519513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7520567) 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, 9278 + ... + 10055.

It is an arithmetic number, because the mean of its divisors is an integer number (1885065).

Almost surely, 2^7520537 is an apocalyptic number.

It is an amenable number.

7520537 is a deficient number, since it is larger than the sum of its proper divisors (19723).

7520537 is a wasteful number, since it uses less digits than its factorization.

7520537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19722.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 7520537 is about 2742.3597502881. The cubic root of 7520537 is about 195.9218850873.

The spelling of 7520537 in words is "seven million, five hundred twenty thousand, five hundred thirty-seven".