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252991153 is a prime number
BaseRepresentation
bin11110001010001…
…01011010110001
3122122001021121201
433011011122301
51004231204103
641034251201
76161250352
oct1705053261
9578037551
10252991153
1111a896aa8
1270886b01
134054c00c
1425857d29
151732551d
hexf1456b1

252991153 has 2 divisors, whose sum is σ = 252991154. Its totient is φ = 252991152.

The previous prime is 252991111. The next prime is 252991181. The reversal of 252991153 is 351199252.

252991153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219721329 + 33269824 = 14823^2 + 5768^2 .

It is a cyclic number.

It is not a de Polignac number, because 252991153 - 29 = 252990641 is a prime.

It is not a weakly prime, because it can be changed into another prime (252991253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126495576 + 126495577.

It is an arithmetic number, because the mean of its divisors is an integer number (126495577).

Almost surely, 2252991153 is an apocalyptic number.

It is an amenable number.

252991153 is a deficient number, since it is larger than the sum of its proper divisors (1).

252991153 is an equidigital number, since it uses as much as digits as its factorization.

252991153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 37.

The square root of 252991153 is about 15905.6956150934. The cubic root of 252991153 is about 632.4629821014.

The spelling of 252991153 in words is "two hundred fifty-two million, nine hundred ninety-one thousand, one hundred fifty-three".