40505053 has 2 divisors, whose sum is σ = 40505054. Its totient is φ = 40505052.

The previous prime is 40505039. The next prime is 40505077. The reversal of 40505053 is 35050504.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40220964 + 284089 = 6342^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 40505053 - 2⁵ = 40505021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40508053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252526 + 20252527.

It is an arithmetic number, because the mean of its divisors is an integer number (20252527).

Almost surely, 2^40505053 is an apocalyptic number.

It is an amenable number.

40505053 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505053 is an equidigital number, since it uses as much as digits as its factorization.

40505053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 40505053 is about 6364.3580194706. The cubic root of 40505053 is about 343.4285542488.

Adding to 40505053 its reverse (35050504), we get a palindrome (75555557).

The spelling of 40505053 in words is "forty million, five hundred five thousand, fifty-three".