87555061 has 8 divisors (see below), whose sum is σ = 98096544. Its totient is φ = 77443920.

The previous prime is 87555053. The next prime is 87555071. The reversal of 87555061 is 16055578.

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 87555061 - 2³ = 87555053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87555061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87555001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107155 + ... + 107968.

It is an arithmetic number, because the mean of its divisors is an integer number (12262068).

Almost surely, 2^87555061 is an apocalyptic number.

It is an amenable number.

87555061 is a deficient number, since it is larger than the sum of its proper divisors (10541483).

87555061 is a wasteful number, since it uses less digits than its factorization.

87555061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215171.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 87555061 is about 9357.0861383232. The cubic root of 87555061 is about 444.0451030257.

The spelling of 87555061 in words is "eighty-seven million, five hundred fifty-five thousand, sixty-one".