53087287 has 8 divisors (see below), whose sum is σ = 58427280. Its totient is φ = 47832960.

The previous prime is 53087269. The next prime is 53087303. The reversal of 53087287 is 78278035.

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 53087287 - 2¹⁹ = 52562999 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 (53087207) 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, 20112 + ... + 22597.

It is an arithmetic number, because the mean of its divisors is an integer number (7303410).

Almost surely, 2^53087287 is an apocalyptic number.

53087287 is a deficient number, since it is larger than the sum of its proper divisors (5339993).

53087287 is a wasteful number, since it uses less digits than its factorization.

53087287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42833.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 53087287 is about 7286.1023187984. The cubic root of 53087287 is about 375.8346729592.

The spelling of 53087287 in words is "fifty-three million, eighty-seven thousand, two hundred eighty-seven".