52541509 has 8 divisors (see below), whose sum is σ = 55700568. Its totient is φ = 49390080.

The previous prime is 52541501. The next prime is 52541539. The reversal of 52541509 is 90514525.

It can be written as a sum of positive squares in 4 ways, for example, as 41796225 + 10745284 = 6465^2 + 3278^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 52541509 - 2³ = 52541501 is a prime.

It is a super-2 number, since 2×52541509² = 5521220335994162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52541501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18769 + ... + 21385.

It is an arithmetic number, because the mean of its divisors is an integer number (6962571).

Almost surely, 2^52541509 is an apocalyptic number.

It is an amenable number.

52541509 is a deficient number, since it is larger than the sum of its proper divisors (3159059).

52541509 is a wasteful number, since it uses less digits than its factorization.

52541509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 52541509 is about 7248.5522002673. The cubic root of 52541509 is about 374.5422776829.

The spelling of 52541509 in words is "fifty-two million, five hundred forty-one thousand, five hundred nine".