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247120053 = 3671229453
BaseRepresentation
bin11101011101011…
…00000010110101
3122012222222222120
432232230002311
51001230320203
640304350153
76060325425
oct1656540265
9565888876
10247120053
11117546a54
126a915359
133c2748ab
1424b6a485
1516a65b53
hexebac0b5

247120053 has 8 divisors (see below), whose sum is σ = 334411488. Its totient is φ = 162287664.

The previous prime is 247120043. The next prime is 247120057. The reversal of 247120053 is 350021742.

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

It is not a de Polignac number, because 247120053 - 24 = 247120037 is a prime.

It is a super-2 number, since 2×2471200532 = 122136641189445618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247120057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614526 + ... + 614927.

It is an arithmetic number, because the mean of its divisors is an integer number (41801436).

Almost surely, 2247120053 is an apocalyptic number.

It is an amenable number.

247120053 is a deficient number, since it is larger than the sum of its proper divisors (87291435).

247120053 is a wasteful number, since it uses less digits than its factorization.

247120053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229523.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 247120053 is about 15720.0525762480. The cubic root of 247120053 is about 627.5321723371.

Adding to 247120053 its reverse (350021742), we get a palindrome (597141795).

The spelling of 247120053 in words is "two hundred forty-seven million, one hundred twenty thousand, fifty-three".

Divisors: 1 3 67 201 1229453 3688359 82373351 247120053