40632521 has 2 divisors, whose sum is σ = 40632522. Its totient is φ = 40632520.

The previous prime is 40632511. The next prime is 40632539. The reversal of 40632521 is 12523604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40195600 + 436921 = 6340^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 40632521 - 2¹⁰ = 40631497 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (40632511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20316260 + 20316261.

It is an arithmetic number, because the mean of its divisors is an integer number (20316261).

Almost surely, 2^40632521 is an apocalyptic number.

It is an amenable number.

40632521 is a deficient number, since it is larger than the sum of its proper divisors (1).

40632521 is an equidigital number, since it uses as much as digits as its factorization.

40632521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40632521 is about 6374.3643604676. The cubic root of 40632521 is about 343.7884295989.

The spelling of 40632521 in words is "forty million, six hundred thirty-two thousand, five hundred twenty-one".