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13445801 = 19976733
BaseRepresentation
bin110011010010…
…101010101001
3221022010011122
4303102222221
511420231201
61200105025
7222200405
oct63225251
927263148
1013445801
117654036
124605175
132a2a0c5
141b00105
1512a8e1b
hexcd2aa9

13445801 has 4 divisors (see below), whose sum is σ = 13454532. Its totient is φ = 13437072.

The previous prime is 13445791. The next prime is 13445813. The reversal of 13445801 is 10854431.

13445801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7295401 + 6150400 = 2701^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 13445801 - 26 = 13445737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13445851) 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, 1370 + ... + 5363.

It is an arithmetic number, because the mean of its divisors is an integer number (3363633).

Almost surely, 213445801 is an apocalyptic number.

It is an amenable number.

13445801 is a deficient number, since it is larger than the sum of its proper divisors (8731).

13445801 is an equidigital number, since it uses as much as digits as its factorization.

13445801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 13445801 is about 3666.8516468491. The cubic root of 13445801 is about 237.7910802252.

The spelling of 13445801 in words is "thirteen million, four hundred forty-five thousand, eight hundred one".

Divisors: 1 1997 6733 13445801