87053805 has 16 divisors (see below), whose sum is σ = 154762560. Its totient is φ = 46428624.

The previous prime is 87053777. The next prime is 87053807. The reversal of 87053805 is 50835078.

It is a happy number.

It is not a de Polignac number, because 87053805 - 2⁷ = 87053677 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87053805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87053807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322287 + ... + 322556.

It is an arithmetic number, because the mean of its divisors is an integer number (9672660).

Almost surely, 2^87053805 is an apocalyptic number.

It is an amenable number.

87053805 is a deficient number, since it is larger than the sum of its proper divisors (67708755).

87053805 is a wasteful number, since it uses less digits than its factorization.

87053805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644857 (or 644851 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 87053805 is about 9330.2628580335. The cubic root of 87053805 is about 443.1960891370.

The spelling of 87053805 in words is "eighty-seven million, fifty-three thousand, eight hundred five".