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150136457 = 199775181
BaseRepresentation
bin10001111001011…
…10011010001001
3101110111201111112
420330232122021
5301413331312
622521540105
73502065422
oct1074563211
9343451445
10150136457
1177825819
1242344635
1325149053
1415d22649
15d2a9d22
hex8f2e689

150136457 has 4 divisors (see below), whose sum is σ = 150213636. Its totient is φ = 150059280.

The previous prime is 150136381. The next prime is 150136477. The reversal of 150136457 is 754631051.

150136457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754631051 = 2397131481.

It can be written as a sum of positive squares in 2 ways, for example, as 38390416 + 111746041 = 6196^2 + 10571^2 .

It is a cyclic number.

It is not a de Polignac number, because 150136457 - 212 = 150132361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150136477) 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, 35594 + ... + 39587.

It is an arithmetic number, because the mean of its divisors is an integer number (37553409).

Almost surely, 2150136457 is an apocalyptic number.

It is an amenable number.

150136457 is a deficient number, since it is larger than the sum of its proper divisors (77179).

150136457 is an equidigital number, since it uses as much as digits as its factorization.

150136457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77178.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 150136457 is about 12253.0182812236. The cubic root of 150136457 is about 531.4903548701.

The spelling of 150136457 in words is "one hundred fifty million, one hundred thirty-six thousand, four hundred fifty-seven".

Divisors: 1 1997 75181 150136457