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3455221 = 711231951
BaseRepresentation
bin1101001011100011110101
320111112200011
431023203311
51341031341
6202020221
741240350
oct15134365
96445604
103455221
111a4aa60
1211a7671
1393c913
1465d297
15483b81
hex34b8f5

3455221 has 16 divisors (see below), whose sum is σ = 4497408. Its totient is φ = 2574000.

The previous prime is 3455219. The next prime is 3455227. The reversal of 3455221 is 1225543.

It is not a de Polignac number, because 3455221 - 21 = 3455219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3455192 and 3455201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3455227) 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 in 15 ways as a sum of consecutive naturals, for example, 796 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (281088).

Almost surely, 23455221 is an apocalyptic number.

It is an amenable number.

3455221 is a deficient number, since it is larger than the sum of its proper divisors (1042187).

3455221 is a wasteful number, since it uses less digits than its factorization.

3455221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992.

The product of its digits is 1200, while the sum is 22.

The square root of 3455221 is about 1858.8224767309. The cubic root of 3455221 is about 151.1791654289.

It can be divided in two parts, 34 and 55221, that added together give a palindrome (55255).

The spelling of 3455221 in words is "three million, four hundred fifty-five thousand, two hundred twenty-one".

Divisors: 1 7 11 23 77 161 253 1771 1951 13657 21461 44873 150227 314111 493603 3455221