552440142121 has 4 divisors (see below), whose sum is σ = 631360162432. Its totient is φ = 473520121812.

The previous prime is 552440142103. The next prime is 552440142127. The reversal of 552440142121 is 121241044255.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121241044255 = 5 ⋅24248208851.

It is a cyclic number.

It is not a de Polignac number, because 552440142121 - 2⁹ = 552440141609 is a prime.

It is a super-2 number, since 2×552440142121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552440142127) 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, 39460010145 + ... + 39460010158.

It is an arithmetic number, because the mean of its divisors is an integer number (157840040608).

Almost surely, 2^552440142121 is an apocalyptic number.

It is an amenable number.

552440142121 is a deficient number, since it is larger than the sum of its proper divisors (78920020311).

552440142121 is an equidigital number, since it uses as much as digits as its factorization.

552440142121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78920020310.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 552440142121 its reverse (121241044255), we get a palindrome (673681186376).

The spelling of 552440142121 in words is "five hundred fifty-two billion, four hundred forty million, one hundred forty-two thousand, one hundred twenty-one".