53299987 has 8 divisors (see below), whose sum is σ = 57820896. Its totient is φ = 48839232.

The previous prime is 53299973. The next prime is 53299991. The reversal of 53299987 is 78999235.

53299987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53299987 - 2¹¹ = 53297939 is a prime.

It is a super-2 number, since 2×53299987² = 5681777228400338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53299087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13183 + ... + 16744.

It is an arithmetic number, because the mean of its divisors is an integer number (7227612).

Almost surely, 2^53299987 is an apocalyptic number.

53299987 is a deficient number, since it is larger than the sum of its proper divisors (4520909).

53299987 is a wasteful number, since it uses less digits than its factorization.

53299987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30077.

The product of its digits is 1224720, while the sum is 52.

The square root of 53299987 is about 7300.6840090501. The cubic root of 53299987 is about 376.3359449438.

The spelling of 53299987 in words is "fifty-three million, two hundred ninety-nine thousand, nine hundred eighty-seven".