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150540047 = 721505721
BaseRepresentation
bin10001111100100…
…00111100001111
3101111021020010022
420332100330033
5302014240142
622534332355
73505366160
oct1076207417
9344236108
10150540047
1177a80a69
12424ba0bb
132525a968
1415dc9767
15d3396d2
hex8f90f0f

150540047 has 4 divisors (see below), whose sum is σ = 172045776. Its totient is φ = 129034320.

The previous prime is 150540043. The next prime is 150540067. The reversal of 150540047 is 740045051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740045051 = 3123872421.

It is a cyclic number.

It is not a de Polignac number, because 150540047 - 22 = 150540043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 150539998 and 150540025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150540041) 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, 10752854 + ... + 10752867.

It is an arithmetic number, because the mean of its divisors is an integer number (43011444).

Almost surely, 2150540047 is an apocalyptic number.

150540047 is a deficient number, since it is larger than the sum of its proper divisors (21505729).

150540047 is an equidigital number, since it uses as much as digits as its factorization.

150540047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21505728.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 150540047 is about 12269.4762316898. The cubic root of 150540047 is about 531.9661715068.

Adding to 150540047 its reverse (740045051), we get a palindrome (890585098).

The spelling of 150540047 in words is "one hundred fifty million, five hundred forty thousand, forty-seven".

Divisors: 1 7 21505721 150540047