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154005055 = 531232051
BaseRepresentation
bin10010010110111…
…10111000111111
3101201210021012221
421023132320333
5303411130210
623140510211
73550010221
oct1113367077
9351707187
10154005055
1179a28306
12436ab367
1325ba1b69
141664c411
15d7c11da
hex92dee3f

154005055 has 12 divisors (see below), whose sum is σ = 190965816. Its totient is φ = 119226000.

The previous prime is 154005037. The next prime is 154005083. The reversal of 154005055 is 550500451.

It is a de Polignac number, because none of the positive numbers 2k-154005055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11221 + ... + 20830.

It is an arithmetic number, because the mean of its divisors is an integer number (15913818).

Almost surely, 2154005055 is an apocalyptic number.

154005055 is a deficient number, since it is larger than the sum of its proper divisors (36960761).

154005055 is an equidigital number, since it uses as much as digits as its factorization.

154005055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32118 (or 32087 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 154005055 is about 12409.8773160737. The cubic root of 154005055 is about 536.0167058263.

The spelling of 154005055 in words is "one hundred fifty-four million, five thousand, fifty-five".

Divisors: 1 5 31 155 961 4805 32051 160255 993581 4967905 30801011 154005055