Search a number
-
+
55213608 = 23311320359
BaseRepresentation
bin1101001010011…
…1111000101000
310211220010211110
43102213320220
5103113313413
65251230320
71240210422
oct322477050
9124803743
1055213608
112919188a
12165a83a0
13b592498
147493812
154ca98c3
hex34a7e28

55213608 has 32 divisors (see below), whose sum is σ = 139262400. Its totient is φ = 18240768.

The previous prime is 55213607. The next prime is 55213619. The reversal of 55213608 is 80631255.

55213608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55213607) 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 7 ways as a sum of consecutive naturals, for example, 7468 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (4351950).

Almost surely, 255213608 is an apocalyptic number.

It is an amenable number.

55213608 is an abundant number, since it is smaller than the sum of its proper divisors (84048792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55213608 is a wasteful number, since it uses less digits than its factorization.

55213608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20481 (or 20477 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55213608 is about 7430.5859795847. The cubic root of 55213608 is about 380.7869380038.

The spelling of 55213608 in words is "fifty-five million, two hundred thirteen thousand, six hundred eight".

Divisors: 1 2 3 4 6 8 12 24 113 226 339 452 678 904 1356 2712 20359 40718 61077 81436 122154 162872 244308 488616 2300567 4601134 6901701 9202268 13803402 18404536 27606804 55213608