84887551 has 6 divisors (see below), whose sum is σ = 98746800. Its totient is φ = 72760716.

The previous prime is 84887533. The next prime is 84887563. The reversal of 84887551 is 15578848.

It is not a de Polignac number, because 84887551 - 2⁷ = 84887423 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 (84887531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 866151 + ... + 866248.

It is an arithmetic number, because the mean of its divisors is an integer number (16457800).

Almost surely, 2^84887551 is an apocalyptic number.

84887551 is a deficient number, since it is larger than the sum of its proper divisors (13859249).

84887551 is a wasteful number, since it uses less digits than its factorization.

84887551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732413 (or 1732406 counting only the distinct ones).

The product of its digits is 358400, while the sum is 46.

The square root of 84887551 is about 9213.4440357556. Note that the first 3 decimals coincide. The cubic root of 84887551 is about 439.4889918090.

The spelling of 84887551 in words is "eighty-four million, eight hundred eighty-seven thousand, five hundred fifty-one".