40222481 has 4 divisors (see below), whose sum is σ = 43316532. Its totient is φ = 37128432.

The previous prime is 40222471. The next prime is 40222529. The reversal of 40222481 is 18422204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8761600 + 31460881 = 2960^2 + 5609^2 .

It is a cyclic number.

It is not a de Polignac number, because 40222481 - 2¹⁸ = 39960337 is a prime.

It is a super-2 number, since 2×40222481² = 3235695955590722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40222421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547006 + ... + 1547031.

It is an arithmetic number, because the mean of its divisors is an integer number (10829133).

Almost surely, 2^40222481 is an apocalyptic number.

It is an amenable number.

40222481 is a deficient number, since it is larger than the sum of its proper divisors (3094051).

40222481 is a wasteful number, since it uses less digits than its factorization.

40222481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094050.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 40222481 is about 6342.1195983677. The cubic root of 40222481 is about 342.6280793293.

Adding to 40222481 its reverse (18422204), we get a palindrome (58644685).

The spelling of 40222481 in words is "forty million, two hundred twenty-two thousand, four hundred eighty-one".