Search a number
-
+
102871451 = 891155859
BaseRepresentation
bin1100010000110…
…11000110011011
321011120102002202
412020123012123
5202313341301
614112520415
72356251524
oct610330633
9234512082
10102871451
1153082931
122a55010b
131840a7a7
14d93b84b
15907066b
hex621b19b

102871451 has 4 divisors (see below), whose sum is σ = 104027400. Its totient is φ = 101715504.

The previous prime is 102871441. The next prime is 102871459. The reversal of 102871451 is 154178201.

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 102871451 - 222 = 98677147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102871459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577841 + ... + 578018.

It is an arithmetic number, because the mean of its divisors is an integer number (26006850).

Almost surely, 2102871451 is an apocalyptic number.

102871451 is a deficient number, since it is larger than the sum of its proper divisors (1155949).

102871451 is an equidigital number, since it uses as much as digits as its factorization.

102871451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155948.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 102871451 is about 10142.5564331681. The cubic root of 102871451 is about 468.5597239939.

The spelling of 102871451 in words is "one hundred two million, eight hundred seventy-one thousand, four hundred fifty-one".

Divisors: 1 89 1155859 102871451