53563571 has 4 divisors (see below), whose sum is σ = 53592000. Its totient is φ = 53535144.

The previous prime is 53563547. The next prime is 53563577. The reversal of 53563571 is 17536535.

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

It is a cyclic number.

It is not a de Polignac number, because 53563571 - 2¹⁸ = 53301427 is a prime.

It is a super-2 number, since 2×53563571² = 5738112276544082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53563577) 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, 11171 + ... + 15228.

It is an arithmetic number, because the mean of its divisors is an integer number (13398000).

Almost surely, 2^53563571 is an apocalyptic number.

53563571 is a deficient number, since it is larger than the sum of its proper divisors (28429).

53563571 is a wasteful number, since it uses less digits than its factorization.

53563571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28428.

The product of its digits is 47250, while the sum is 35.

The square root of 53563571 is about 7318.7137531126. The cubic root of 53563571 is about 376.9552888318.

The spelling of 53563571 in words is "fifty-three million, five hundred sixty-three thousand, five hundred seventy-one".