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123223055 = 5171449683
BaseRepresentation
bin1110101100000…
…11110000001111
322120212101020212
413112003300033
5223021114210
620121033035
73024243614
oct726036017
9276771225
10123223055
116361333a
123532577b
131c6b4c67
141251850b
15ac40805
hex7583c0f

123223055 has 8 divisors (see below), whose sum is σ = 156565872. Its totient is φ = 92779648.

The previous prime is 123223043. The next prime is 123223057. The reversal of 123223055 is 550322321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123223055 - 224 = 106445839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123223055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123223057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724757 + ... + 724926.

It is an arithmetic number, because the mean of its divisors is an integer number (19570734).

Almost surely, 2123223055 is an apocalyptic number.

123223055 is a deficient number, since it is larger than the sum of its proper divisors (33342817).

123223055 is a wasteful number, since it uses less digits than its factorization.

123223055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449705.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 123223055 is about 11100.5880474865. The cubic root of 123223055 is about 497.6194237011.

Adding to 123223055 its reverse (550322321), we get a palindrome (673545376).

The spelling of 123223055 in words is "one hundred twenty-three million, two hundred twenty-three thousand, fifty-five".

Divisors: 1 5 17 85 1449683 7248415 24644611 123223055