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144052531 = 773927847
BaseRepresentation
bin10001001011000…
…01000100110011
3101001001121220221
420211201010303
5243334140111
622143313511
73366266140
oct1045410463
9331047827
10144052531
117434a887
12402ab897
1323ac8aac
14151bb3c7
15c9a7371
hex8961133

144052531 has 8 divisors (see below), whose sum is σ = 164860160. Its totient is φ = 123302088.

The previous prime is 144052523. The next prime is 144052549. The reversal of 144052531 is 135250441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144052531 - 23 = 144052523 is a prime.

It is a super-2 number, since 2×1440525312 = 41502263375011922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144052496 and 144052505.

It is not an unprimeable number, because it can be changed into a prime (144052561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8751 + ... + 19096.

It is an arithmetic number, because the mean of its divisors is an integer number (20607520).

Almost surely, 2144052531 is an apocalyptic number.

144052531 is a deficient number, since it is larger than the sum of its proper divisors (20807629).

144052531 is an equidigital number, since it uses as much as digits as its factorization.

144052531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28593.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 144052531 is about 12002.1885920860. The cubic root of 144052531 is about 524.2120072811.

The spelling of 144052531 in words is "one hundred forty-four million, fifty-two thousand, five hundred thirty-one".

Divisors: 1 7 739 5173 27847 194929 20578933 144052531