Search a number
-
+
55050105487 = 1319211730259
BaseRepresentation
bin110011010001001111…
…011111001010001111
312021002112111002222211
4303101033133022033
51400220311333422
641142322451251
73656123114236
oct632117371217
9167075432884
1055050105487
112138a393053
12a804203b27
1352640c2a20
142943315b1d
151672de7577
hexcd13df28f

55050105487 has 12 divisors (see below), whose sum is σ = 62569206840. Its totient is φ = 48140978832.

The previous prime is 55050105463. The next prime is 55050105491. The reversal of 55050105487 is 78450105055.

It is a happy number.

It is not a de Polignac number, because 55050105487 - 211 = 55050103439 is a prime.

It is a super-2 number, since 2×550501054872 (a number of 22 digits) 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 (55050105437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5860437 + ... + 5869822.

It is an arithmetic number, because the mean of its divisors is an integer number (5214100570).

Almost surely, 255050105487 is an apocalyptic number.

55050105487 is a deficient number, since it is larger than the sum of its proper divisors (7519101353).

55050105487 is a wasteful number, since it uses less digits than its factorization.

55050105487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11730310 (or 11730291 counting only the distinct ones).

The product of its (nonzero) digits is 140000, while the sum is 40.

The spelling of 55050105487 in words is "fifty-five billion, fifty million, one hundred five thousand, four hundred eighty-seven".

Divisors: 1 13 19 247 361 4693 11730259 152493367 222874921 2897373973 4234623499 55050105487