40750221 has 8 divisors (see below), whose sum is σ = 54377280. Its totient is φ = 27144992.

The previous prime is 40750211. The next prime is 40750223. The reversal of 40750221 is 12205704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40750221 - 2⁵ = 40750189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40750223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441 + ... + 9038.

It is an arithmetic number, because the mean of its divisors is an integer number (6797160).

Almost surely, 2^40750221 is an apocalyptic number.

It is an amenable number.

40750221 is a deficient number, since it is larger than the sum of its proper divisors (13627059).

40750221 is a wasteful number, since it uses less digits than its factorization.

40750221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10915.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 40750221 is about 6383.5899774343. The cubic root of 40750221 is about 344.1200596119.

Adding to 40750221 its reverse (12205704), we get a palindrome (52955925).

The spelling of 40750221 in words is "forty million, seven hundred fifty thousand, two hundred twenty-one".