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75550508101 = 509148429289
BaseRepresentation
bin100011001011100101…
…0010100010001000101
321020000020121110120201
41012113022110101011
52214211412224401
654412445330501
75313132503005
oct1062712242105
9236006543521
1075550508101
112a04a323a52
1212785866a31
137180363a83
143929c5a005
151e72a5ab01
hex1197294445

75550508101 has 4 divisors (see below), whose sum is σ = 75698937900. Its totient is φ = 75402078304.

The previous prime is 75550508087. The next prime is 75550508149. The reversal of 75550508101 is 10180505557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10180505557 = 58011754957.

It can be written as a sum of positive squares in 2 ways, for example, as 45535292100 + 30015216001 = 213390^2 + 173249^2 .

It is a cyclic number.

It is not a de Polignac number, because 75550508101 - 25 = 75550508069 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 (75550508191) 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, 74214136 + ... + 74215153.

It is an arithmetic number, because the mean of its divisors is an integer number (18924734475).

Almost surely, 275550508101 is an apocalyptic number.

It is an amenable number.

75550508101 is a deficient number, since it is larger than the sum of its proper divisors (148429799).

75550508101 is a wasteful number, since it uses less digits than its factorization.

75550508101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148429798.

The product of its (nonzero) digits is 35000, while the sum is 37.

The spelling of 75550508101 in words is "seventy-five billion, five hundred fifty million, five hundred eight thousand, one hundred one".

Divisors: 1 509 148429289 75550508101