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257054141 = 2311176267
BaseRepresentation
bin11110101001001…
…01010110111101
3122220200200222202
433110211112331
51011301213031
641301321245
76240631661
oct1724452675
9586620882
10257054141
11122111643
1272106225
1341342456
14261d48a1
15178792cb
hexf5255bd

257054141 has 4 divisors (see below), whose sum is σ = 268230432. Its totient is φ = 245877852.

The previous prime is 257054131. The next prime is 257054159. The reversal of 257054141 is 141450752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-257054141 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 (257054101) 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, 5588111 + ... + 5588156.

It is an arithmetic number, because the mean of its divisors is an integer number (67057608).

Almost surely, 2257054141 is an apocalyptic number.

It is an amenable number.

257054141 is a deficient number, since it is larger than the sum of its proper divisors (11176291).

257054141 is a wasteful number, since it uses less digits than its factorization.

257054141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11176290.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 257054141 is about 16032.9080643531. The cubic root of 257054141 is about 635.8307608778.

The spelling of 257054141 in words is "two hundred fifty-seven million, fifty-four thousand, one hundred forty-one".

Divisors: 1 23 11176267 257054141