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254445053 = 785332401
BaseRepresentation
bin11110010101010…
…00010111111101
3122201210010222212
433022220113331
51010114220203
641125350205
76206514212
oct1712502775
9581703885
10254445053
1112069a375
1271268365
134093aa05
1425b15b09
15175111d8
hexf2a85fd

254445053 has 4 divisors (see below), whose sum is σ = 254485308. Its totient is φ = 254404800.

The previous prime is 254445011. The next prime is 254445109. The reversal of 254445053 is 350544452.

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

It can be written as a sum of positive squares in 2 ways, for example, as 144048004 + 110397049 = 12002^2 + 10507^2 .

It is a cyclic number.

It is not a de Polignac number, because 254445053 - 220 = 253396477 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 (254415053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8348 + ... + 24053.

It is an arithmetic number, because the mean of its divisors is an integer number (63621327).

Almost surely, 2254445053 is an apocalyptic number.

It is an amenable number.

254445053 is a deficient number, since it is larger than the sum of its proper divisors (40255).

254445053 is an equidigital number, since it uses as much as digits as its factorization.

254445053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40254.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 254445053 is about 15951.3338940667. Note that the first 3 decimals coincide. The cubic root of 254445053 is about 633.6722234018.

The spelling of 254445053 in words is "two hundred fifty-four million, four hundred forty-five thousand, fifty-three".

Divisors: 1 7853 32401 254445053