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200154151 = 1910534429
BaseRepresentation
bin10111110111000…
…01110000100111
3111221121212212201
423323201300213
5402214413101
631505555331
74650165541
oct1373416047
9457555781
10200154151
11a2a8885a
1257045b47
133260c512
141c822691
1512889e01
hexbee1c27

200154151 has 4 divisors (see below), whose sum is σ = 210688600. Its totient is φ = 189619704.

The previous prime is 200154139. The next prime is 200154161. The reversal of 200154151 is 151451002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151451002 = 275725501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-200154151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 10534429 = 200154151 / (2 + 0 + 0 + 1 + 5 + 4 + 1 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200154131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5267196 + ... + 5267233.

It is an arithmetic number, because the mean of its divisors is an integer number (52672150).

Almost surely, 2200154151 is an apocalyptic number.

200154151 is a deficient number, since it is larger than the sum of its proper divisors (10534449).

200154151 is a wasteful number, since it uses less digits than its factorization.

200154151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10534448.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 200154151 is about 14147.5846348414. The cubic root of 200154151 is about 584.9537558107.

The spelling of 200154151 in words is "two hundred million, one hundred fifty-four thousand, one hundred fifty-one".

Divisors: 1 19 10534429 200154151