55222153021 has 8 divisors (see below), whose sum is σ = 64650325824. Its totient is φ = 46178803680.

The previous prime is 55222153009. The next prime is 55222153037. The reversal of 55222153021 is 12035122255.

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 55222153021 - 2¹³ = 55222144829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55222753021) 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, 96205555 + ... + 96206128.

It is an arithmetic number, because the mean of its divisors is an integer number (8081290728).

Almost surely, 2^55222153021 is an apocalyptic number.

It is an amenable number.

55222153021 is a deficient number, since it is larger than the sum of its proper divisors (9428172803).

55222153021 is a wasteful number, since it uses less digits than its factorization.

55222153021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192411731.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 55222153021 its reverse (12035122255), we get a palindrome (67257275276).

The spelling of 55222153021 in words is "fifty-five billion, two hundred twenty-two million, one hundred fifty-three thousand, twenty-one".