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130050057 = 343350019
BaseRepresentation
bin1111100000001…
…10100000001001
3100001201020010210
413300012200021
5231243100212
620523231333
73136256454
oct760064011
9301636123
10130050057
1167456595
1237678549
1320c354c7
14133b449b
15b63d53c
hex7c06809

130050057 has 4 divisors (see below), whose sum is σ = 173400080. Its totient is φ = 86700036.

The previous prime is 130050049. The next prime is 130050059. The reversal of 130050057 is 750050031.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 750050031 = 3250016677.

It is not a de Polignac number, because 130050057 - 23 = 130050049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130050059) 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, 21675007 + ... + 21675012.

It is an arithmetic number, because the mean of its divisors is an integer number (43350020).

Almost surely, 2130050057 is an apocalyptic number.

It is an amenable number.

130050057 is a deficient number, since it is larger than the sum of its proper divisors (43350023).

130050057 is an equidigital number, since it uses as much as digits as its factorization.

130050057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43350022.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 130050057 is about 11403.9491843835. The cubic root of 130050057 is about 506.6447137207.

The spelling of 130050057 in words is "one hundred thirty million, fifty thousand, fifty-seven".

Divisors: 1 3 43350019 130050057