52801487 has 4 divisors (see below), whose sum is σ = 53324376. Its totient is φ = 52278600.

The previous prime is 52801459. The next prime is 52801499. The reversal of 52801487 is 78410825.

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 52801487 - 2¹⁸ = 52539343 is a prime.

It is a super-2 number, since 2×52801487² = 5575994058822338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52801447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261293 + ... + 261494.

It is an arithmetic number, because the mean of its divisors is an integer number (13331094).

Almost surely, 2^52801487 is an apocalyptic number.

52801487 is a deficient number, since it is larger than the sum of its proper divisors (522889).

52801487 is a wasteful number, since it uses less digits than its factorization.

52801487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522888.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 52801487 is about 7266.4631699335. The cubic root of 52801487 is about 375.1590128599.

The spelling of 52801487 in words is "fifty-two million, eight hundred one thousand, four hundred eighty-seven".