53087917487 has 4 divisors (see below), whose sum is σ = 57914091816. Its totient is φ = 48261743160.

The previous prime is 53087917481. The next prime is 53087917489. The reversal of 53087917487 is 78471978035.

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 53087917487 - 2⁴ = 53087917471 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 (53087917481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2413087148 + ... + 2413087169.

It is an arithmetic number, because the mean of its divisors is an integer number (14478522954).

Almost surely, 2^53087917487 is an apocalyptic number.

53087917487 is a deficient number, since it is larger than the sum of its proper divisors (4826174329).

53087917487 is a wasteful number, since it uses less digits than its factorization.

53087917487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826174328.

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 53087917487 in words is "fifty-three billion, eighty-seven million, nine hundred seventeen thousand, four hundred eighty-seven".