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145506007 = 4118611907
BaseRepresentation
bin10001010110000…
…11111011010111
3101010210110201101
420223003323113
5244222143012
622234410531
73414531523
oct1053037327
9333713641
10145506007
11751528a9
1240890a47
13241b753a
1415478d83
15cb92d57
hex8ac3ed7

145506007 has 8 divisors (see below), whose sum is σ = 149213232. Its totient is φ = 141806400.

The previous prime is 145506001. The next prime is 145506103. The reversal of 145506007 is 700605541.

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

It is a cyclic number.

It is not a de Polignac number, because 145506007 - 27 = 145505879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145506001) 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, 75348 + ... + 77254.

It is an arithmetic number, because the mean of its divisors is an integer number (18651654).

Almost surely, 2145506007 is an apocalyptic number.

145506007 is a deficient number, since it is larger than the sum of its proper divisors (3707225).

145506007 is a wasteful number, since it uses less digits than its factorization.

145506007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 145506007 is about 12062.5870774059. The cubic root of 145506007 is about 525.9691932108.

The spelling of 145506007 in words is "one hundred forty-five million, five hundred six thousand, seven".

Divisors: 1 41 1861 1907 76301 78187 3548927 145506007