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1387097 = 7511847
BaseRepresentation
bin101010010101001011001
32121110201222
411102221121
5323341342
645421425
714535005
oct5225131
92543658
101387097
11868168
1256a875
1339748a
14281705
151c5ed2
hex152a59

1387097 has 4 divisors (see below), whose sum is σ = 1389696. Its totient is φ = 1384500.

The previous prime is 1387069. The next prime is 1387109. The reversal of 1387097 is 7907831.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7907831 = 8299539.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1387097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (347424).

21387097 is an apocalyptic number.

It is an amenable number.

1387097 is a deficient number, since it is larger than the sum of its proper divisors (2599).

1387097 is an equidigital number, since it uses as much as digits as its factorization.

1387097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1387097 is about 1177.7508225427. The cubic root of 1387097 is about 111.5241557188.

The spelling of 1387097 in words is "one million, three hundred eighty-seven thousand, ninety-seven".

Divisors: 1 751 1847 1387097