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90160201 = 591528139
BaseRepresentation
bin1010101111110…
…11110001001001
320021122121112201
411113323301021
5141040111301
612540240201
72143230505
oct527736111
9207577481
1090160201
114699076a
1226240061
13158a9b41
14bd8d305
157dae201
hex55fbc49

90160201 has 4 divisors (see below), whose sum is σ = 91688400. Its totient is φ = 88632004.

The previous prime is 90160193. The next prime is 90160211. The reversal of 90160201 is 10206109.

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: 10206109 = 24142349.

It is a cyclic number.

It is not a de Polignac number, because 90160201 - 23 = 90160193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90160211) 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, 764011 + ... + 764128.

It is an arithmetic number, because the mean of its divisors is an integer number (22922100).

Almost surely, 290160201 is an apocalyptic number.

It is an amenable number.

90160201 is a deficient number, since it is larger than the sum of its proper divisors (1528199).

90160201 is a wasteful number, since it uses less digits than its factorization.

90160201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528198.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 90160201 is about 9495.2725605956. The cubic root of 90160201 is about 448.4062153856.

The spelling of 90160201 in words is "ninety million, one hundred sixty thousand, two hundred one".

Divisors: 1 59 1528139 90160201