87252641 has 4 divisors (see below), whose sum is σ = 99717312. Its totient is φ = 74787972.

The previous prime is 87252637. The next prime is 87252689. The reversal of 87252641 is 14625278.

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: 14625278 = 2 ⋅7312639.

It is not a de Polignac number, because 87252641 - 2² = 87252637 is a prime.

It is a super-2 number, since 2×87252641² = 15226046722949762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87252601) 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, 6232325 + ... + 6232338.

It is an arithmetic number, because the mean of its divisors is an integer number (24929328).

Almost surely, 2^87252641 is an apocalyptic number.

It is an amenable number.

87252641 is a deficient number, since it is larger than the sum of its proper divisors (12464671).

87252641 is a wasteful number, since it uses less digits than its factorization.

87252641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12464670.

The product of its digits is 26880, while the sum is 35.

The square root of 87252641 is about 9340.9122145538. The cubic root of 87252641 is about 443.5332611868.

The spelling of 87252641 in words is "eighty-seven million, two hundred fifty-two thousand, six hundred forty-one".