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90153061 = 976731381
BaseRepresentation
bin1010101111110…
…10000001100101
320021122020202021
411113322001211
5141034344221
612540143141
72143200625
oct527720145
9207566667
1090153061
1146986369
1226237ab1
13158a680b
14bd8a885
157dac041
hex55fa065

90153061 has 8 divisors (see below), whose sum is σ = 91283864. Its totient is φ = 89026560.

The previous prime is 90153013. The next prime is 90153071. The reversal of 90153061 is 16035109.

It can be written as a sum of positive squares in 4 ways, for example, as 5788836 + 84364225 = 2406^2 + 9185^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90153061 - 211 = 90151013 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 (90153071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64591 + ... + 65971.

It is an arithmetic number, because the mean of its divisors is an integer number (11410483).

Almost surely, 290153061 is an apocalyptic number.

It is an amenable number.

90153061 is a deficient number, since it is larger than the sum of its proper divisors (1130803).

90153061 is a wasteful number, since it uses less digits than its factorization.

90153061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 90153061 is about 9494.8965765826. The cubic root of 90153061 is about 448.3943782895.

The spelling of 90153061 in words is "ninety million, one hundred fifty-three thousand, sixty-one".

Divisors: 1 97 673 1381 65281 133957 929413 90153061