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55454568223 = 250322155241
BaseRepresentation
bin110011101001010110…
…011000111100011111
312022010201112221120011
4303221112120330133
51402032332140343
641250411504051
74002134024005
oct635126307437
9168121487504
1055454568223
112157772697a
12a8b7758027
1352c9b376a2
142980d1ca75
15169868d29d
hexce9598f1f

55454568223 has 4 divisors (see below), whose sum is σ = 55476725968. Its totient is φ = 55432410480.

The previous prime is 55454568199. The next prime is 55454568227. The reversal of 55454568223 is 32286545455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55454568223 - 29 = 55454567711 is a prime.

It is a super-2 number, since 2×554545682232 (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 (55454568227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11075118 + ... + 11080123.

It is an arithmetic number, because the mean of its divisors is an integer number (13869181492).

Almost surely, 255454568223 is an apocalyptic number.

55454568223 is a deficient number, since it is larger than the sum of its proper divisors (22157745).

55454568223 is a wasteful number, since it uses less digits than its factorization.

55454568223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22157744.

The product of its digits is 5760000, while the sum is 49.

The spelling of 55454568223 in words is "fifty-five billion, four hundred fifty-four million, five hundred sixty-eight thousand, two hundred twenty-three".

Divisors: 1 2503 22155241 55454568223