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1225487 = 10911243
BaseRepresentation
bin100101011001100001111
32022021001102
410223030033
5303203422
642133315
713262564
oct4531417
92267042
101225487
117677aa
124b123b
1333ba53
1423c86b
15193192
hex12b30f

1225487 has 4 divisors (see below), whose sum is σ = 1236840. Its totient is φ = 1214136.

The previous prime is 1225459. The next prime is 1225493. The reversal of 1225487 is 7845221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225487 - 212 = 1221391 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 (1225087) 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 3 ways as a sum of consecutive naturals, for example, 5513 + ... + 5730.

It is an arithmetic number, because the mean of its divisors is an integer number (309210).

21225487 is an apocalyptic number.

1225487 is a deficient number, since it is larger than the sum of its proper divisors (11353).

1225487 is a wasteful number, since it uses less digits than its factorization.

1225487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11352.

The product of its digits is 4480, while the sum is 29.

The square root of 1225487 is about 1107.0171633719. The cubic root of 1225487 is about 107.0129253318.

The spelling of 1225487 in words is "one million, two hundred twenty-five thousand, four hundred eighty-seven".

Divisors: 1 109 11243 1225487