40754561 has 2 divisors, whose sum is σ = 40754562. Its totient is φ = 40754560.

The previous prime is 40754521. The next prime is 40754579. The reversal of 40754561 is 16545704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 3312400 = 6119^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 40754561 - 2¹⁴ = 40738177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40754521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20377280 + 20377281.

It is an arithmetic number, because the mean of its divisors is an integer number (20377281).

Almost surely, 2^40754561 is an apocalyptic number.

It is an amenable number.

40754561 is a deficient number, since it is larger than the sum of its proper divisors (1).

40754561 is an equidigital number, since it uses as much as digits as its factorization.

40754561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 40754561 is about 6383.9299024974. The cubic root of 40754561 is about 344.1322757260.

The spelling of 40754561 in words is "forty million, seven hundred fifty-four thousand, five hundred sixty-one".