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145023053 = 7311913499
BaseRepresentation
bin10001010010011…
…10000001001101
3101002212221020012
420221032001031
5244111214203
622220203005
73410450510
oct1051160115
9332787205
10145023053
1174952a6a
1240699465
1324078776
1415390d77
15cae9bd8
hex8a4e04d

145023053 has 16 divisors (see below), whose sum is σ = 172032000. Its totient is φ = 119631600.

The previous prime is 145023013. The next prime is 145023071. The reversal of 145023053 is 350320541.

It is a cyclic number.

It is not a de Polignac number, because 145023053 - 26 = 145022989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145023013) 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 15 ways as a sum of consecutive naturals, for example, 39698 + ... + 43196.

It is an arithmetic number, because the mean of its divisors is an integer number (10752000).

Almost surely, 2145023053 is an apocalyptic number.

It is an amenable number.

145023053 is a deficient number, since it is larger than the sum of its proper divisors (27008947).

145023053 is a wasteful number, since it uses less digits than its factorization.

145023053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 145023053 is about 12042.5517644725. The cubic root of 145023053 is about 525.3866273742.

Adding to 145023053 its reverse (350320541), we get a palindrome (495343594).

The spelling of 145023053 in words is "one hundred forty-five million, twenty-three thousand, fifty-three".

Divisors: 1 7 31 191 217 1337 3499 5921 24493 41447 108469 668309 759283 4678163 20717579 145023053