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55048417 = 397138661
BaseRepresentation
bin1101000111111…
…1100011100001
310211120202020021
43101333203201
5103043022132
65243513441
71235622004
oct321774341
9124522207
1055048417
1129089766
1216528881
13b535238
14744d53b
154c75997
hex347f8e1

55048417 has 4 divisors (see below), whose sum is σ = 55187476. Its totient is φ = 54909360.

The previous prime is 55048393. The next prime is 55048447. The reversal of 55048417 is 71484055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45037521 + 10010896 = 6711^2 + 3164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55048417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55048447) 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, 68934 + ... + 69727.

It is an arithmetic number, because the mean of its divisors is an integer number (13796869).

Almost surely, 255048417 is an apocalyptic number.

It is an amenable number.

55048417 is a deficient number, since it is larger than the sum of its proper divisors (139059).

55048417 is a wasteful number, since it uses less digits than its factorization.

55048417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139058.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 55048417 is about 7419.4620424934. The cubic root of 55048417 is about 380.4068058010.

The spelling of 55048417 in words is "fifty-five million, forty-eight thousand, four hundred seventeen".

Divisors: 1 397 138661 55048417