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145045061 = 7231635527
BaseRepresentation
bin10001010010100…
…11011001000101
3101002221001102022
420221103121011
5244112420221
622220452525
73410601620
oct1051233105
9332831368
10145045061
1174968557
12406aa145
13240857a5
1415398db7
15cb014ab
hex8a53645

145045061 has 16 divisors (see below), whose sum is σ = 174065664. Its totient is φ = 118167984.

The previous prime is 145045057. The next prime is 145045099. The reversal of 145045061 is 160540541.

It is a cyclic number.

It is not a de Polignac number, because 145045061 - 22 = 145045057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145045061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145045561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23480 + ... + 29006.

It is an arithmetic number, because the mean of its divisors is an integer number (10879104).

Almost surely, 2145045061 is an apocalyptic number.

It is an amenable number.

145045061 is a deficient number, since it is larger than the sum of its proper divisors (29020603).

145045061 is a wasteful number, since it uses less digits than its factorization.

145045061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5720.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 145045061 is about 12043.4654896338. The cubic root of 145045061 is about 525.4132027446.

The spelling of 145045061 in words is "one hundred forty-five million, forty-five thousand, sixty-one".

Divisors: 1 7 23 161 163 1141 3749 5527 26243 38689 127121 889847 900901 6306307 20720723 145045061