87513801 has 4 divisors (see below), whose sum is σ = 116685072. Its totient is φ = 58342532.

The previous prime is 87513799. The next prime is 87513817. The reversal of 87513801 is 10831578.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87513801 - 2¹ = 87513799 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87513821) 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, 14585631 + ... + 14585636.

It is an arithmetic number, because the mean of its divisors is an integer number (29171268).

Almost surely, 2^87513801 is an apocalyptic number.

It is an amenable number.

87513801 is a deficient number, since it is larger than the sum of its proper divisors (29171271).

87513801 is a wasteful number, since it uses less digits than its factorization.

87513801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29171270.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 87513801 is about 9354.8811323287. The cubic root of 87513801 is about 443.9753405264.

The spelling of 87513801 in words is "eighty-seven million, five hundred thirteen thousand, eight hundred one".