40656101 has 2 divisors, whose sum is σ = 40656102. Its totient is φ = 40656100.

The previous prime is 40656089. The next prime is 40656107. The reversal of 40656101 is 10165604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33339076 + 7317025 = 5774^2 + 2705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40656101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40656107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20328050 + 20328051.

It is an arithmetic number, because the mean of its divisors is an integer number (20328051).

Almost surely, 2^40656101 is an apocalyptic number.

It is an amenable number.

40656101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40656101 is an equidigital number, since it uses as much as digits as its factorization.

40656101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40656101 is about 6376.2136883891. The cubic root of 40656101 is about 343.8549195544.

The spelling of 40656101 in words is "forty million, six hundred fifty-six thousand, one hundred one".