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252563141 = 490951449
BaseRepresentation
bin11110000110111…
…00111011000101
3122121020112111102
433003130323011
51004124010031
641021145445
76154515455
oct1703347305
9577215442
10252563141
1111a624476
12706bb285
134042c25c
1425785d65
151728d7cb
hexf0dcec5

252563141 has 4 divisors (see below), whose sum is σ = 252619500. Its totient is φ = 252506784.

The previous prime is 252563111. The next prime is 252563159. The reversal of 252563141 is 141365252.

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 187115041 + 65448100 = 13679^2 + 8090^2 .

It is a cyclic number.

It is not a de Polignac number, because 252563141 - 222 = 248368837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252563111) 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, 20816 + ... + 30633.

It is an arithmetic number, because the mean of its divisors is an integer number (63154875).

Almost surely, 2252563141 is an apocalyptic number.

It is an amenable number.

252563141 is a deficient number, since it is larger than the sum of its proper divisors (56359).

252563141 is an equidigital number, since it uses as much as digits as its factorization.

252563141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56358.

The product of its digits is 7200, while the sum is 29.

The square root of 252563141 is about 15892.2352424069. The cubic root of 252563141 is about 632.1061125104.

The spelling of 252563141 in words is "two hundred fifty-two million, five hundred sixty-three thousand, one hundred forty-one".

Divisors: 1 4909 51449 252563141