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55022253 = 31113128257
BaseRepresentation
bin1101000111100…
…1001010101101
310211112102100020
43101321022231
5103041203003
65243152353
71235452506
oct321711255
9124472306
1055022253
1129071040
12165156b9
13b526360
147443bad
154c6cd53
hex34792ad

55022253 has 16 divisors (see below), whose sum is σ = 86189376. Its totient is φ = 30781440.

The previous prime is 55022239. The next prime is 55022263. The reversal of 55022253 is 35222055.

It is not a de Polignac number, because 55022253 - 24 = 55022237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55022213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63700 + ... + 64557.

It is an arithmetic number, because the mean of its divisors is an integer number (5386836).

Almost surely, 255022253 is an apocalyptic number.

It is an amenable number.

55022253 is a deficient number, since it is larger than the sum of its proper divisors (31167123).

55022253 is a wasteful number, since it uses less digits than its factorization.

55022253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128284.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 55022253 is about 7417.6986323253. The cubic root of 55022253 is about 380.3465283127.

The spelling of 55022253 in words is "fifty-five million, twenty-two thousand, two hundred fifty-three".

Divisors: 1 3 11 13 33 39 143 429 128257 384771 1410827 1667341 4232481 5002023 18340751 55022253