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154253053 = 179073709
BaseRepresentation
bin10010011000110…
…11011011111101
3101202020212102001
421030123123331
5303442044203
623150102301
73552062233
oct1114333375
9352225361
10154253053
117a087669
12437aa991
1325c5a9c6
14166b4953
15d81e91d
hex931b6fd

154253053 has 4 divisors (see below), whose sum is σ = 163326780. Its totient is φ = 145179328.

The previous prime is 154253003. The next prime is 154253063. The reversal of 154253053 is 350352451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350352451 = 2912081119.

It can be written as a sum of positive squares in 2 ways, for example, as 135908964 + 18344089 = 11658^2 + 4283^2 .

It is a cyclic number.

It is not a de Polignac number, because 154253053 - 213 = 154244861 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 (154253003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4536838 + ... + 4536871.

It is an arithmetic number, because the mean of its divisors is an integer number (40831695).

Almost surely, 2154253053 is an apocalyptic number.

It is an amenable number.

154253053 is a deficient number, since it is larger than the sum of its proper divisors (9073727).

154253053 is an equidigital number, since it uses as much as digits as its factorization.

154253053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9073726.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 154253053 is about 12419.8652569180. The cubic root of 154253053 is about 536.3042716701.

The spelling of 154253053 in words is "one hundred fifty-four million, two hundred fifty-three thousand, fifty-three".

Divisors: 1 17 9073709 154253053