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55235190 = 2352380051
BaseRepresentation
bin1101001010110…
…1001001110110
310211221020102210
43102231021312
5103120011230
65251514250
71240330353
oct322551166
9124836383
1055235190
11291a701a
12165b8986
13b59c25a
14749b62a
154cb0eb0
hex34ad276

55235190 has 32 divisors (see below), whose sum is σ = 138329856. Its totient is φ = 14088800.

The previous prime is 55235171. The next prime is 55235203. The reversal of 55235190 is 9153255.

It is a super-2 number, since 2×552351902 = 6101852428672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39336 + ... + 40715.

It is an arithmetic number, because the mean of its divisors is an integer number (4322808).

Almost surely, 255235190 is an apocalyptic number.

55235190 is an abundant number, since it is smaller than the sum of its proper divisors (83094666).

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

55235190 is a wasteful number, since it uses less digits than its factorization.

55235190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80084.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 55235190 is about 7432.0380784816. The cubic root of 55235190 is about 380.8365457814.

The spelling of 55235190 in words is "fifty-five million, two hundred thirty-five thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 80051 160102 240153 400255 480306 800510 1200765 1841173 2401530 3682346 5523519 9205865 11047038 18411730 27617595 55235190