4221533551 has 16 divisors (see below), whose sum is σ = 4667716800. Its totient is φ = 3797595648.

The previous prime is 4221533501. The next prime is 4221533573. The reversal of 4221533551 is 1553351224.

It is a cyclic number.

It is not a de Polignac number, because 4221533551 - 2¹⁵ = 4221500783 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 (4221533501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649345 + ... + 655813.

It is an arithmetic number, because the mean of its divisors is an integer number (291732300).

Almost surely, 2^4221533551 is an apocalyptic number.

4221533551 is a deficient number, since it is larger than the sum of its proper divisors (446183249).

4221533551 is a wasteful number, since it uses less digits than its factorization.

4221533551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8178.

The product of its digits is 18000, while the sum is 31.

The square root of 4221533551 is about 64973.3295360489. The cubic root of 4221533551 is about 1616.1813159165.

Adding to 4221533551 its reverse (1553351224), we get a palindrome (5774884775).

The spelling of 4221533551 in words is "four billion, two hundred twenty-one million, five hundred thirty-three thousand, five hundred fifty-one".