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45193891 is a prime number
BaseRepresentation
bin1010110001100…
…1101010100011
310011001002100211
42230121222203
543032201031
64252354551
71056066421
oct254315243
9104032324
1045193891
1123568926
1213175a57
139494962
146006111
153e7abb1
hex2b19aa3

45193891 has 2 divisors, whose sum is σ = 45193892. Its totient is φ = 45193890.

The previous prime is 45193867. The next prime is 45193921. The reversal of 45193891 is 19839154.

45193891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45193891 - 25 = 45193859 is a prime.

It is not a weakly prime, because it can be changed into another prime (45193831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22596945 + 22596946.

It is an arithmetic number, because the mean of its divisors is an integer number (22596946).

Almost surely, 245193891 is an apocalyptic number.

45193891 is a deficient number, since it is larger than the sum of its proper divisors (1).

45193891 is an equidigital number, since it uses as much as digits as its factorization.

45193891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 45193891 is about 6722.6401807623. The cubic root of 45193891 is about 356.1994500554.

The spelling of 45193891 in words is "forty-five million, one hundred ninety-three thousand, eight hundred ninety-one".