4021450522 has 4 divisors (see below), whose sum is σ = 6032175786. Its totient is φ = 2010725260.

The previous prime is 4021450439. The next prime is 4021450547. The reversal of 4021450522 is 2250541204.

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

It can be written as a sum of positive squares in only one way, i.e., 3069049201 + 952401321 = 55399^2 + 30861^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005362629 + ... + 1005362632.

Almost surely, 2^4021450522 is an apocalyptic number.

4021450522 is a deficient number, since it is larger than the sum of its proper divisors (2010725264).

4021450522 is a wasteful number, since it uses less digits than its factorization.

4021450522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010725263.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 4021450522 is about 63414.9077268114. The cubic root of 4021450522 is about 1590.2335432169.

Adding to 4021450522 its reverse (2250541204), we get a palindrome (6271991726).

The spelling of 4021450522 in words is "four billion, twenty-one million, four hundred fifty thousand, five hundred twenty-two".