40523633 has 2 divisors, whose sum is σ = 40523634. Its totient is φ = 40523632.

The previous prime is 40523629. The next prime is 40523647. The reversal of 40523633 is 33632504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39150049 + 1373584 = 6257^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 40523633 - 2² = 40523629 is a prime.

It is not a weakly prime, because it can be changed into another prime (40523663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20261816 + 20261817.

It is an arithmetic number, because the mean of its divisors is an integer number (20261817).

Almost surely, 2^40523633 is an apocalyptic number.

It is an amenable number.

40523633 is a deficient number, since it is larger than the sum of its proper divisors (1).

40523633 is an equidigital number, since it uses as much as digits as its factorization.

40523633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 40523633 is about 6365.8175437252. The cubic root of 40523633 is about 343.4810573865.

The spelling of 40523633 in words is "forty million, five hundred twenty-three thousand, six hundred thirty-three".