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145354871 = 2341915083
BaseRepresentation
bin10001010100111…
…11000001110111
3101010111210101202
420222133001313
5244202323441
622231243115
73413332064
oct1052370167
9333453352
10145354871
117505a2a2
124081949b
13241637cc
1415439c6b
15cb6319b
hex8a9f077

145354871 has 8 divisors (see below), whose sum is σ = 152046720. Its totient is φ = 138694072.

The previous prime is 145354861. The next prime is 145354897. The reversal of 145354871 is 178453541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-145354871 is a prime.

It is a super-2 number, since 2×1453548712 = 42256077046853282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145354841) 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, 2096 + ... + 17178.

It is an arithmetic number, because the mean of its divisors is an integer number (19005840).

Almost surely, 2145354871 is an apocalyptic number.

145354871 is a deficient number, since it is larger than the sum of its proper divisors (6691849).

145354871 is a wasteful number, since it uses less digits than its factorization.

145354871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15525.

The product of its digits is 67200, while the sum is 38.

The square root of 145354871 is about 12056.3207903572. The cubic root of 145354871 is about 525.7870233692.

The spelling of 145354871 in words is "one hundred forty-five million, three hundred fifty-four thousand, eight hundred seventy-one".

Divisors: 1 23 419 9637 15083 346909 6319777 145354871