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255130501 = 487752313
BaseRepresentation
bin11110011010011…
…11101110000101
3122210001222020211
433031033232011
51010303134001
641152155421
76215400463
oct1715175605
9583058224
10255130501
1112101835a
1271538b71
1340b1a9c2
1425c53833
15175e9351
hexf34fb85

255130501 has 4 divisors (see below), whose sum is σ = 255187692. Its totient is φ = 255073312.

The previous prime is 255130493. The next prime is 255130529. The reversal of 255130501 is 105031552.

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 166281025 + 88849476 = 12895^2 + 9426^2 .

It is a cyclic number.

It is not a de Polignac number, because 255130501 - 23 = 255130493 is a prime.

It is a super-2 number, since 2×2551305012 = 130183145081022002, which 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 (255130531) 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, 21280 + ... + 31033.

It is an arithmetic number, because the mean of its divisors is an integer number (63796923).

Almost surely, 2255130501 is an apocalyptic number.

It is an amenable number.

255130501 is a deficient number, since it is larger than the sum of its proper divisors (57191).

255130501 is an equidigital number, since it uses as much as digits as its factorization.

255130501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57190.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 255130501 is about 15972.8050448254. The cubic root of 255130501 is about 634.2407284751.

The spelling of 255130501 in words is "two hundred fifty-five million, one hundred thirty thousand, five hundred one".

Divisors: 1 4877 52313 255130501