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40140577 = 54174197
BaseRepresentation
bin1001100100011…
…1111100100001
32210112100112001
42121013330201
540233444302
63552204001
7665121631
oct231077441
983470461
1040140577
1120727234
1211539601
138415829
14548c6c1
1537cd787
hex2647f21

40140577 has 4 divisors (see below), whose sum is σ = 40215316. Its totient is φ = 40065840.

The previous prime is 40140539. The next prime is 40140601. The reversal of 40140577 is 77504104.

40140577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5377761 + 34762816 = 2319^2 + 5896^2 .

It is a cyclic number.

It is not a de Polignac number, because 40140577 - 211 = 40138529 is a prime.

It is a super-2 number, since 2×401405772 = 3222531843785858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40140677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36558 + ... + 37639.

It is an arithmetic number, because the mean of its divisors is an integer number (10053829).

Almost surely, 240140577 is an apocalyptic number.

It is an amenable number.

40140577 is a deficient number, since it is larger than the sum of its proper divisors (74739).

40140577 is an equidigital number, since it uses as much as digits as its factorization.

40140577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74738.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 40140577 is about 6335.6591606557. The cubic root of 40140577 is about 342.3953597256.

The spelling of 40140577 in words is "forty million, one hundred forty thousand, five hundred seventy-seven".

Divisors: 1 541 74197 40140577