40521351 has 32 divisors (see below), whose sum is σ = 60535552. Its totient is φ = 23950080.

The previous prime is 40521337. The next prime is 40521361. The reversal of 40521351 is 15312504.

40521351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40521351 - 2⁶ = 40521287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40521361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122256 + ... + 122586.

It is an arithmetic number, because the mean of its divisors is an integer number (1891736).

Almost surely, 2^40521351 is an apocalyptic number.

40521351 is a deficient number, since it is larger than the sum of its proper divisors (20014201).

40521351 is a wasteful number, since it uses less digits than its factorization.

40521351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40521351 is about 6365.6383026371. The cubic root of 40521351 is about 343.4746098033.

Adding to 40521351 its reverse (15312504), we get a palindrome (55833855).

The spelling of 40521351 in words is "forty million, five hundred twenty-one thousand, three hundred fifty-one".