52487821 has 8 divisors (see below), whose sum is σ = 53846144. Its totient is φ = 51135840.

The previous prime is 52487807. The next prime is 52487833. The reversal of 52487821 is 12878425.

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 52487821 - 2¹¹ = 52485773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52487801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18316 + ... + 20986.

It is an arithmetic number, because the mean of its divisors is an integer number (6730768).

Almost surely, 2^52487821 is an apocalyptic number.

It is an amenable number.

52487821 is a deficient number, since it is larger than the sum of its proper divisors (1358323).

52487821 is a wasteful number, since it uses less digits than its factorization.

52487821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its digits is 35840, while the sum is 37.

The square root of 52487821 is about 7244.8478935034. The cubic root of 52487821 is about 374.4146625259.

The spelling of 52487821 in words is "fifty-two million, four hundred eighty-seven thousand, eight hundred twenty-one".