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13430051 = 17790003
BaseRepresentation
bin110011001110…
…110100100011
3221021022120022
4303032310203
511414230201
61155504055
7222103445
oct63166443
927238508
1013430051
117643218
1245b802b
132a22b9b
141ad8495
1512a441b
hexcced23

13430051 has 4 divisors (see below), whose sum is σ = 14220072. Its totient is φ = 12640032.

The previous prime is 13430009. The next prime is 13430063. The reversal of 13430051 is 15003431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15003431 = 43348917.

It is a cyclic number.

It is not a de Polignac number, because 13430051 - 210 = 13429027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 790003 = 13430051 / (1 + 3 + 4 + 3 + 0 + 0 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13430951) 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, 394985 + ... + 395018.

It is an arithmetic number, because the mean of its divisors is an integer number (3555018).

Almost surely, 213430051 is an apocalyptic number.

13430051 is a deficient number, since it is larger than the sum of its proper divisors (790021).

13430051 is an equidigital number, since it uses as much as digits as its factorization.

13430051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790020.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13430051 is about 3664.7033986395. The cubic root of 13430051 is about 237.6981968829.

Adding to 13430051 its reverse (15003431), we get a palindrome (28433482).

The spelling of 13430051 in words is "thirteen million, four hundred thirty thousand, fifty-one".

Divisors: 1 17 790003 13430051