40045501 has 2 divisors, whose sum is σ = 40045502. Its totient is φ = 40045500.

The previous prime is 40045493. The next prime is 40045517. The reversal of 40045501 is 10554004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40018276 + 27225 = 6326^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 40045501 - 2³ = 40045493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40045301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022750 + 20022751.

It is an arithmetic number, because the mean of its divisors is an integer number (20022751).

Almost surely, 2^40045501 is an apocalyptic number.

It is an amenable number.

40045501 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045501 is an equidigital number, since it uses as much as digits as its factorization.

40045501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40045501 is about 6328.1514678459. The cubic root of 40045501 is about 342.1248162224.

Adding to 40045501 its reverse (10554004), we get a palindrome (50599505).

The spelling of 40045501 in words is "forty million, forty-five thousand, five hundred one".