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90156095 = 5731391777
BaseRepresentation
bin1010101111110…
…10110000111111
320021122101220122
411113322300333
5141034443340
612540205155
72143212521
oct527726077
9207571818
1090156095
1146988677
12262397bb
13158a8003
14bd8ba11
157dacdb5
hex55fac3f

90156095 has 16 divisors (see below), whose sum is σ = 110520480. Its totient is φ = 70585344.

The previous prime is 90156061. The next prime is 90156097. The reversal of 90156095 is 59065109.

It is a cyclic number.

It is not a de Polignac number, because 90156095 - 28 = 90155839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90156097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49847 + ... + 51623.

It is an arithmetic number, because the mean of its divisors is an integer number (6907530).

Almost surely, 290156095 is an apocalyptic number.

90156095 is a deficient number, since it is larger than the sum of its proper divisors (20364385).

90156095 is a wasteful number, since it uses less digits than its factorization.

90156095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 90156095 is about 9495.0563452778. The cubic root of 90156095 is about 448.3994083028.

The spelling of 90156095 in words is "ninety million, one hundred fifty-six thousand, ninety-five".

Divisors: 1 5 73 139 365 695 1777 8885 10147 50735 129721 247003 648605 1235015 18031219 90156095