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13135554 = 233435657
BaseRepresentation
bin110010000110…
…111011000010
3220201100121000
4302012323002
511330314204
61145312430
7216436035
oct62067302
926640530
1013135554
117461a33
124495716
13294bb23
141a5d01c
151247039
hexc86ec2

13135554 has 32 divisors (see below), whose sum is σ = 29874240. Its totient is φ = 4275936.

The previous prime is 13135541. The next prime is 13135601. The reversal of 13135554 is 45553131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (933570).

Almost surely, 213135554 is an apocalyptic number.

13135554 is an abundant number, since it is smaller than the sum of its proper divisors (16738686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13135554 is a wasteful number, since it uses less digits than its factorization.

13135554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711 (or 5705 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 13135554 is about 3624.3004842314. The cubic root of 13135554 is about 235.9479081618.

Adding to 13135554 its reverse (45553131), we get a palindrome (58688685).

It can be divided in two parts, 13135 and 554, that added together give a square (13689 = 1172).

The spelling of 13135554 in words is "thirteen million, one hundred thirty-five thousand, five hundred fifty-four".

Divisors: 1 2 3 6 9 18 27 43 54 86 129 258 387 774 1161 2322 5657 11314 16971 33942 50913 101826 152739 243251 305478 486502 729753 1459506 2189259 4378518 6567777 13135554