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10245221 = 73121523
BaseRepresentation
bin100111000101…
…010001100101
3201021111210122
4213011101211
510110321341
61003331325
7153040310
oct47052145
921244718
1010245221
115868428
123520b45
13217937c
141509977
15d7594b
hex9c5465

10245221 has 12 divisors (see below), whose sum is σ = 12106656. Its totient is φ = 8492760.

The previous prime is 10245211. The next prime is 10245239. The reversal of 10245221 is 12254201.

It is a de Polignac number, because none of the positive numbers 2k-10245221 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 10245221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10245211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5966 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (1008888).

Almost surely, 210245221 is an apocalyptic number.

It is an amenable number.

10245221 is a deficient number, since it is larger than the sum of its proper divisors (1861435).

10245221 is an equidigital number, since it uses as much as digits as its factorization.

10245221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 10245221 is about 3200.8156772923. The cubic root of 10245221 is about 217.1903092403.

Adding to 10245221 its reverse (12254201), we get a palindrome (22499422).

The spelling of 10245221 in words is "ten million, two hundred forty-five thousand, two hundred twenty-one".

Divisors: 1 7 31 217 961 1523 6727 10661 47213 330491 1463603 10245221