52603521 has 4 divisors (see below), whose sum is σ = 70138032. Its totient is φ = 35069012.

The previous prime is 52603511. The next prime is 52603543. The reversal of 52603521 is 12530625.

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 52603521 - 2⁵ = 52603489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52603491 and 52603500.

It is not an unprimeable number, because it can be changed into a prime (52603511) 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, 8767251 + ... + 8767256.

It is an arithmetic number, because the mean of its divisors is an integer number (17534508).

Almost surely, 2^52603521 is an apocalyptic number.

It is an amenable number.

52603521 is a deficient number, since it is larger than the sum of its proper divisors (17534511).

52603521 is a wasteful number, since it uses less digits than its factorization.

52603521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17534510.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 52603521 is about 7252.8284827369. The cubic root of 52603521 is about 374.6895706494.

The spelling of 52603521 in words is "fifty-two million, six hundred three thousand, five hundred twenty-one".