40653601 has 4 divisors (see below), whose sum is σ = 40670532. Its totient is φ = 40636672.

The previous prime is 40653593. The next prime is 40653629. The reversal of 40653601 is 10635604.

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 4665600 + 35988001 = 2160^2 + 5999^2 .

It is a cyclic number.

It is not a de Polignac number, because 40653601 - 2³ = 40653593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40653631) 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, 4120 + ... + 9913.

It is an arithmetic number, because the mean of its divisors is an integer number (10167633).

Almost surely, 2^40653601 is an apocalyptic number.

It is an amenable number.

40653601 is a deficient number, since it is larger than the sum of its proper divisors (16931).

40653601 is a wasteful number, since it uses less digits than its factorization.

40653601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16930.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40653601 is about 6376.0176442667. The cubic root of 40653601 is about 343.8478713714.

The spelling of 40653601 in words is "forty million, six hundred fifty-three thousand, six hundred one".