87011053 has 4 divisors (see below), whose sum is σ = 88862400. Its totient is φ = 85159708.

The previous prime is 87011039. The next prime is 87011063. The reversal of 87011053 is 35011078.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35011078 = 2 ⋅17505539.

It is a cyclic number.

It is not a de Polignac number, because 87011053 - 2⁵ = 87011021 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 (87011003) 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, 925603 + ... + 925696.

It is an arithmetic number, because the mean of its divisors is an integer number (22215600).

Almost surely, 2^87011053 is an apocalyptic number.

It is an amenable number.

87011053 is a deficient number, since it is larger than the sum of its proper divisors (1851347).

87011053 is a wasteful number, since it uses less digits than its factorization.

87011053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851346.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 87011053 is about 9327.9715372636. The cubic root of 87011053 is about 443.1235262672.

Adding to 87011053 its sum of digits (25), we get a palindrome (87011078).

The spelling of 87011053 in words is "eighty-seven million, eleven thousand, fifty-three".