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1001145 = 35312153
BaseRepresentation
bin11110100011010111001
31212212022110
43310122321
5224014040
633242533
711336535
oct3643271
91785273
101001145
116241a2
12403449
132908c2
141c0bc5
1514b980
hexf46b9

1001145 has 16 divisors (see below), whose sum is σ = 1654272. Its totient is φ = 516480.

The previous prime is 1001123. The next prime is 1001153. The reversal of 1001145 is 5411001.

It is a happy number.

It is not a de Polignac number, because 1001145 - 26 = 1001081 is a prime.

It is a super-2 number, since 2×10011452 = 2004582622050, which contains 22 as substring.

1001145 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001145.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612 + ... + 1541.

It is an arithmetic number, because the mean of its divisors is an integer number (103392).

21001145 is an apocalyptic number.

1001145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001145 is a deficient number, since it is larger than the sum of its proper divisors (653127).

1001145 is a wasteful number, since it uses less digits than its factorization.

1001145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1001145 is about 1000.5723362156. The cubic root of 1001145 is about 100.0381521090.

Adding to 1001145 its reverse (5411001), we get a palindrome (6412146).

The spelling of 1001145 in words is "one million, one thousand, one hundred forty-five".

Divisors: 1 3 5 15 31 93 155 465 2153 6459 10765 32295 66743 200229 333715 1001145