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55606488901 = 69717976831
BaseRepresentation
bin110011110010011001…
…111010111101000101
312022112022102022112221
4303302121322331011
51402340230121101
641313440012341
74005660233305
oct636231727505
9168468368487
1055606488901
1121645460157
12a93a6010b1
135322459892
142997187605
1516a6b9baa1
hexcf267af45

55606488901 has 4 divisors (see below), whose sum is σ = 55614472704. Its totient is φ = 55598505100.

The previous prime is 55606488881. The next prime is 55606488967. The reversal of 55606488901 is 10988460655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10988460655 = 52197692131.

It is a cyclic number.

It is not a de Polignac number, because 55606488901 - 25 = 55606488869 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 (55606488401) 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, 3981445 + ... + 3995386.

It is an arithmetic number, because the mean of its divisors is an integer number (13903618176).

Almost surely, 255606488901 is an apocalyptic number.

It is an amenable number.

55606488901 is a deficient number, since it is larger than the sum of its proper divisors (7983803).

55606488901 is an equidigital number, since it uses as much as digits as its factorization.

55606488901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7983802.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 55606488901 in words is "fifty-five billion, six hundred six million, four hundred eighty-eight thousand, nine hundred one".

Divisors: 1 6971 7976831 55606488901