87541511 has 4 divisors (see below), whose sum is σ = 88596312. Its totient is φ = 86486712.

The previous prime is 87541501. The next prime is 87541513. The reversal of 87541511 is 11514578.

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 87541511 - 2²² = 83347207 is a prime.

It is a super-2 number, since 2×87541511² = 15327032296326242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87541513) 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, 527276 + ... + 527441.

It is an arithmetic number, because the mean of its divisors is an integer number (22149078).

Almost surely, 2^87541511 is an apocalyptic number.

87541511 is a deficient number, since it is larger than the sum of its proper divisors (1054801).

87541511 is a wasteful number, since it uses less digits than its factorization.

87541511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054800.

The product of its digits is 5600, while the sum is 32.

The square root of 87541511 is about 9356.3620601172. The cubic root of 87541511 is about 444.0221950731.

The spelling of 87541511 in words is "eighty-seven million, five hundred forty-one thousand, five hundred eleven".