40056253 has 2 divisors, whose sum is σ = 40056254. Its totient is φ = 40056252.

The previous prime is 40056229. The next prime is 40056281. The reversal of 40056253 is 35265004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39917124 + 139129 = 6318^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 40056253 - 2¹³ = 40048061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40026253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028126 + 20028127.

It is an arithmetic number, because the mean of its divisors is an integer number (20028127).

Almost surely, 2^40056253 is an apocalyptic number.

It is an amenable number.

40056253 is a deficient number, since it is larger than the sum of its proper divisors (1).

40056253 is an equidigital number, since it uses as much as digits as its factorization.

40056253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40056253 is about 6329.0009480170. Note that the first 3 decimals coincide. The cubic root of 40056253 is about 342.1554330354.

The spelling of 40056253 in words is "forty million, fifty-six thousand, two hundred fifty-three".