Search a number
-
+
87554441 = 1311096073
BaseRepresentation
bin1010011011111…
…11100110001001
320002202020010002
411031333212021
5134403220231
612404332345
72112125522
oct515774611
9202666102
1087554441
1145470a47
12253a40b5
13151a6a80
14b8b1849
157a470cb
hex537f989

87554441 has 8 divisors (see below), whose sum is σ = 94389960. Its totient is φ = 80733312.

The previous prime is 87554419. The next prime is 87554443. The reversal of 87554441 is 14445578.

It can be written as a sum of positive squares in 4 ways, for example, as 990025 + 86564416 = 995^2 + 9304^2 .

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 87554441 - 214 = 87538057 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 87554395 and 87554404.

It is not an unprimeable number, because it can be changed into a prime (87554443) 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, 11381 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (11798745).

Almost surely, 287554441 is an apocalyptic number.

It is an amenable number.

87554441 is a deficient number, since it is larger than the sum of its proper divisors (6835519).

87554441 is a wasteful number, since it uses less digits than its factorization.

87554441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7195.

The product of its digits is 89600, while the sum is 38.

The square root of 87554441 is about 9357.0530082927. The cubic root of 87554441 is about 444.0440548906.

The spelling of 87554441 in words is "eighty-seven million, five hundred fifty-four thousand, four hundred forty-one".

Divisors: 1 13 1109 6073 14417 78949 6734957 87554441