7254622021 has 4 divisors (see below), whose sum is σ = 7255101312. Its totient is φ = 7254142732.

The previous prime is 7254622019. The next prime is 7254622043. The reversal of 7254622021 is 1202264527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7254622021 - 2¹ = 7254622019 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 (7254622621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216175 + ... + 247468.

It is an arithmetic number, because the mean of its divisors is an integer number (1813775328).

Almost surely, 2^7254622021 is an apocalyptic number.

It is an amenable number.

7254622021 is a deficient number, since it is larger than the sum of its proper divisors (479291).

7254622021 is a wasteful number, since it uses less digits than its factorization.

7254622021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479290.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 7254622021 is about 85174.0689470686. The cubic root of 7254622021 is about 1935.8495265772.

Adding to 7254622021 its reverse (1202264527), we get a palindrome (8456886548).

The spelling of 7254622021 in words is "seven billion, two hundred fifty-four million, six hundred twenty-two thousand, twenty-one".