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253149 = 3136491
BaseRepresentation
bin111101110011011101
3110212020220
4331303131
531100044
65231553
72103021
oct756335
9425226
10253149
11163216
121025b9
138b2c0
1468381
1550019
hex3dcdd

253149 has 8 divisors (see below), whose sum is σ = 363552. Its totient is φ = 155760.

The previous prime is 253133. The next prime is 253153. The reversal of 253149 is 941352.

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

It is not a de Polignac number, because 253149 - 24 = 253133 is a prime.

It is an Ulam number.

253149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253109) 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 7 ways as a sum of consecutive naturals, for example, 3207 + ... + 3284.

It is an arithmetic number, because the mean of its divisors is an integer number (45444).

2253149 is an apocalyptic number.

It is an amenable number.

253149 is a deficient number, since it is larger than the sum of its proper divisors (110403).

253149 is a wasteful number, since it uses less digits than its factorization.

253149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507.

The product of its digits is 1080, while the sum is 24.

The square root of 253149 is about 503.1391457639. The cubic root of 253149 is about 63.2594490822.

The spelling of 253149 in words is "two hundred fifty-three thousand, one hundred forty-nine".

Divisors: 1 3 13 39 6491 19473 84383 253149