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152256131 = 178956243
BaseRepresentation
bin10010001001100…
…11111010000011
3101121111102010222
421010303322003
5302434144011
623035213255
73526104266
oct1104637203
9347442128
10152256131
1178a43315
1242ba722b
132570bab1
1416314cdd
15d577ddb
hex9133e83

152256131 has 4 divisors (see below), whose sum is σ = 161212392. Its totient is φ = 143299872.

The previous prime is 152256107. The next prime is 152256179. The reversal of 152256131 is 131652251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 152256131 - 210 = 152255107 is a prime.

It is a super-2 number, since 2×1522561312 = 46363858854178322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152256131.

It is not an unprimeable number, because it can be changed into a prime (152256331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4478105 + ... + 4478138.

It is an arithmetic number, because the mean of its divisors is an integer number (40303098).

Almost surely, 2152256131 is an apocalyptic number.

152256131 is a deficient number, since it is larger than the sum of its proper divisors (8956261).

152256131 is an equidigital number, since it uses as much as digits as its factorization.

152256131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8956260.

The product of its digits is 1800, while the sum is 26.

The square root of 152256131 is about 12339.2111174094. The cubic root of 152256131 is about 533.9799248533.

The spelling of 152256131 in words is "one hundred fifty-two million, two hundred fifty-six thousand, one hundred thirty-one".

Divisors: 1 17 8956243 152256131