87274511 has 4 divisors (see below), whose sum is σ = 88753800. Its totient is φ = 85795224.

The previous prime is 87274501. The next prime is 87274513. The reversal of 87274511 is 11547278.

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 87274511 - 2²⁶ = 20165647 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 (87274513) 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, 739556 + ... + 739673.

It is an arithmetic number, because the mean of its divisors is an integer number (22188450).

Almost surely, 2^87274511 is an apocalyptic number.

87274511 is a deficient number, since it is larger than the sum of its proper divisors (1479289).

87274511 is a wasteful number, since it uses less digits than its factorization.

87274511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479288.

The product of its digits is 15680, while the sum is 35.

The square root of 87274511 is about 9342.0827977491. The cubic root of 87274511 is about 443.5703155078.

The spelling of 87274511 in words is "eighty-seven million, two hundred seventy-four thousand, five hundred eleven".