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55665413 = 294146817
BaseRepresentation
bin1101010001011…
…0001100000101
310212202002120222
43110112030011
5103222243123
65305034125
71244101556
oct324261405
9125662528
1055665413
1129470281
1216785945
13b6c001b
14757032d
154d486c8
hex3516305

55665413 has 8 divisors (see below), whose sum is σ = 58990680. Its totient is φ = 52433920.

The previous prime is 55665391. The next prime is 55665419. The reversal of 55665413 is 31456655.

It can be written as a sum of positive squares in 4 ways, for example, as 3508129 + 52157284 = 1873^2 + 7222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55665413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665419) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22220 + ... + 24597.

It is an arithmetic number, because the mean of its divisors is an integer number (7373835).

Almost surely, 255665413 is an apocalyptic number.

It is an amenable number.

55665413 is a deficient number, since it is larger than the sum of its proper divisors (3325267).

55665413 is a wasteful number, since it uses less digits than its factorization.

55665413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46887.

The product of its digits is 54000, while the sum is 35.

The square root of 55665413 is about 7460.9257468494. The cubic root of 55665413 is about 381.8227593470.

The spelling of 55665413 in words is "fifty-five million, six hundred sixty-five thousand, four hundred thirteen".

Divisors: 1 29 41 1189 46817 1357693 1919497 55665413