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455144455 = 591028891
BaseRepresentation
bin11011001000001…
…111010000000111
31011201102201211001
4123020033100013
51413004110310
6113055154131
714164443523
oct3310172007
91151381731
10455144455
11213a0a847
12108515947
13733ab45c
144463ad83
1529e5793a
hex1b20f407

455144455 has 4 divisors (see below), whose sum is σ = 546173352. Its totient is φ = 364115560.

The previous prime is 455144453. The next prime is 455144461. The reversal of 455144455 is 554441554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554441554 = 2277220777.

It is not a de Polignac number, because 455144455 - 21 = 455144453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455144453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45514441 + ... + 45514450.

It is an arithmetic number, because the mean of its divisors is an integer number (136543338).

Almost surely, 2455144455 is an apocalyptic number.

455144455 is a deficient number, since it is larger than the sum of its proper divisors (91028897).

455144455 is an equidigital number, since it uses as much as digits as its factorization.

455144455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91028896.

The product of its digits is 160000, while the sum is 37.

The square root of 455144455 is about 21334.1148164155. The cubic root of 455144455 is about 769.2185556099.

The spelling of 455144455 in words is "four hundred fifty-five million, one hundred forty-four thousand, four hundred fifty-five".

Divisors: 1 5 91028891 455144455