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56227553 = 79770549
BaseRepresentation
bin1101011001111…
…1011011100001
310220210122200222
43112133123201
5103343240203
65325052425
71251632504
oct326373341
9126718628
1056227553
1129814658
12169b7115
13b858b55
14767913b
154e0a038
hex359f6e1

56227553 has 4 divisors (see below), whose sum is σ = 56298900. Its totient is φ = 56156208.

The previous prime is 56227547. The next prime is 56227601. The reversal of 56227553 is 35572265.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35572265 = 57114453.

It can be written as a sum of positive squares in 2 ways, for example, as 44782864 + 11444689 = 6692^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 56227553 - 26 = 56227489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56227513) 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, 34478 + ... + 36071.

It is an arithmetic number, because the mean of its divisors is an integer number (14074725).

Almost surely, 256227553 is an apocalyptic number.

It is an amenable number.

56227553 is a deficient number, since it is larger than the sum of its proper divisors (71347).

56227553 is an equidigital number, since it uses as much as digits as its factorization.

56227553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71346.

The product of its digits is 63000, while the sum is 35.

The square root of 56227553 is about 7498.5033840094. The cubic root of 56227553 is about 383.1037424592.

The spelling of 56227553 in words is "fifty-six million, two hundred twenty-seven thousand, five hundred fifty-three".

Divisors: 1 797 70549 56227553