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252551153 = 397636149
BaseRepresentation
bin11110000110110…
…01111111110001
3122121012221001102
433003121333301
51004123114103
641021014145
76154435511
oct1703317761
9577187042
10252551153
1111a616468
12706b4355
134042696a
1425781841
1517289e88
hexf0d9ff1

252551153 has 4 divisors (see below), whose sum is σ = 253187700. Its totient is φ = 251914608.

The previous prime is 252551129. The next prime is 252551161. The reversal of 252551153 is 351155252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 153190129 + 99361024 = 12377^2 + 9968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-252551153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252551113) 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, 317678 + ... + 318471.

It is an arithmetic number, because the mean of its divisors is an integer number (63296925).

Almost surely, 2252551153 is an apocalyptic number.

It is an amenable number.

252551153 is a deficient number, since it is larger than the sum of its proper divisors (636547).

252551153 is an equidigital number, since it uses as much as digits as its factorization.

252551153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636546.

The product of its digits is 7500, while the sum is 29.

The square root of 252551153 is about 15891.8580726106. The cubic root of 252551153 is about 632.0961113045.

The spelling of 252551153 in words is "two hundred fifty-two million, five hundred fifty-one thousand, one hundred fifty-three".

Divisors: 1 397 636149 252551153