252087487 has 4 divisors (see below), whose sum is σ = 253634200. Its totient is φ = 250540776.

The previous prime is 252087463. The next prime is 252087491. The reversal of 252087487 is 784780252.

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 252087487 - 2²³ = 243698879 is a prime.

It is a super-3 number, since 3×252087487³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252082487) 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, 773112 + ... + 773437.

It is an arithmetic number, because the mean of its divisors is an integer number (63408550).

Almost surely, 2^252087487 is an apocalyptic number.

252087487 is a deficient number, since it is larger than the sum of its proper divisors (1546713).

252087487 is a wasteful number, since it uses less digits than its factorization.

252087487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546712.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 252087487 is about 15877.2632087523. The cubic root of 252087487 is about 631.7090464608.

The spelling of 252087487 in words is "two hundred fifty-two million, eighty-seven thousand, four hundred eighty-seven".