55552023121 has 4 divisors (see below), whose sum is σ = 63488026432. Its totient is φ = 47616019812.

The previous prime is 55552023101. The next prime is 55552023217. The reversal of 55552023121 is 12132025555.

55552023121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55552023121 - 2⁷ = 55552022993 is a prime.

It is a super-2 number, since 2×55552023121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55552023101) 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, 3968001645 + ... + 3968001658.

It is an arithmetic number, because the mean of its divisors is an integer number (15872006608).

Almost surely, 2^55552023121 is an apocalyptic number.

It is an amenable number.

55552023121 is a deficient number, since it is larger than the sum of its proper divisors (7936003311).

55552023121 is an equidigital number, since it uses as much as digits as its factorization.

55552023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7936003310.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 55552023121 its reverse (12132025555), we get a palindrome (67684048676).

The spelling of 55552023121 in words is "fifty-five billion, five hundred fifty-two million, twenty-three thousand, one hundred twenty-one".