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45479821 = 311467091
BaseRepresentation
bin1010110101111…
…1011110001101
310011120121120211
42231133132031
543120323241
64302442421
71061400142
oct255373615
9104517524
1045479821
1123743732
1213293411
139564b4a
14607c3c9
153ed5781
hex2b5f78d

45479821 has 4 divisors (see below), whose sum is σ = 46946944. Its totient is φ = 44012700.

The previous prime is 45479813. The next prime is 45479849. The reversal of 45479821 is 12897454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45479821 - 23 = 45479813 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 (45479851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733515 + ... + 733576.

It is an arithmetic number, because the mean of its divisors is an integer number (11736736).

Almost surely, 245479821 is an apocalyptic number.

It is an amenable number.

45479821 is a deficient number, since it is larger than the sum of its proper divisors (1467123).

45479821 is a wasteful number, since it uses less digits than its factorization.

45479821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467122.

The product of its digits is 80640, while the sum is 40.

The square root of 45479821 is about 6743.8728487420. The cubic root of 45479821 is about 356.9490651727.

The spelling of 45479821 in words is "forty-five million, four hundred seventy-nine thousand, eight hundred twenty-one".

Divisors: 1 31 1467091 45479821