87983551 has 8 divisors (see below), whose sum is σ = 94917744. Its totient is φ = 81244800.

The previous prime is 87983543. The next prime is 87983563. The reversal of 87983551 is 15538978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87983551 - 2³ = 87983543 is a prime.

It is a super-2 number, since 2×87983551² = 15482210493139202, 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 (87983351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47925 + ... + 49726.

It is an arithmetic number, because the mean of its divisors is an integer number (11864718).

Almost surely, 2^87983551 is an apocalyptic number.

87983551 is a deficient number, since it is larger than the sum of its proper divisors (6934193).

87983551 is a wasteful number, since it uses less digits than its factorization.

87983551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97721.

The product of its digits is 302400, while the sum is 46.

The square root of 87983551 is about 9379.9547440273. The cubic root of 87983551 is about 444.7683025623.

The spelling of 87983551 in words is "eighty-seven million, nine hundred eighty-three thousand, five hundred fifty-one".