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7485001 = 41182561
BaseRepresentation
bin11100100011011001001001
3112002021111021
4130203121021
53404010001
6424232441
7120423106
oct34433111
915067437
107485001
114252657
12260b721
131720bc4
14dcbaad
159ccba1
hex723649

7485001 has 4 divisors (see below), whose sum is σ = 7667604. Its totient is φ = 7302400.

The previous prime is 7484963. The next prime is 7485019. The reversal of 7485001 is 1005847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1005847 = 4721401.

It can be written as a sum of positive squares in 2 ways, for example, as 3798601 + 3686400 = 1949^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 7485001 - 29 = 7484489 is a prime.

It is a Duffinian number.

7485001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7485061) 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, 91240 + ... + 91321.

It is an arithmetic number, because the mean of its divisors is an integer number (1916901).

Almost surely, 27485001 is an apocalyptic number.

It is an amenable number.

7485001 is a deficient number, since it is larger than the sum of its proper divisors (182603).

7485001 is a wasteful number, since it uses less digits than its factorization.

7485001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182602.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7485001 is about 2735.8729868179. The cubic root of 7485001 is about 195.6128080879.

The spelling of 7485001 in words is "seven million, four hundred eighty-five thousand, one".

Divisors: 1 41 182561 7485001