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99530121 = 3176173163
BaseRepresentation
bin1011110111010…
…11010110001001
320221021122122210
411323223112021
5200434430441
613513135333
72315664165
oct573532611
9227248583
1099530121
11512004a9
12293ba549
131780a982
14d30bca5
158b10616
hex5eeb589

99530121 has 16 divisors (see below), whose sum is σ = 140785344. Its totient is φ = 62329344.

The previous prime is 99530107. The next prime is 99530141. The reversal of 99530121 is 12103599.

It is not a de Polignac number, because 99530121 - 210 = 99529097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99530141) 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, 29886 + ... + 33048.

It is an arithmetic number, because the mean of its divisors is an integer number (8799084).

Almost surely, 299530121 is an apocalyptic number.

It is an amenable number.

99530121 is a deficient number, since it is larger than the sum of its proper divisors (41255223).

99530121 is a wasteful number, since it uses less digits than its factorization.

99530121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 99530121 is about 9976.4783866854. The cubic root of 99530121 is about 463.4307466740.

The spelling of 99530121 in words is "ninety-nine million, five hundred thirty thousand, one hundred twenty-one".

Divisors: 1 3 17 51 617 1851 3163 9489 10489 31467 53771 161313 1951571 5854713 33176707 99530121