1552411405221 has 4 divisors (see below), whose sum is σ = 2069881873632. Its totient is φ = 1034940936812.

The previous prime is 1552411405177. The next prime is 1552411405241. The reversal of 1552411405221 is 1225041142551.

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 1552411405221 - 2¹⁷ = 1552411274149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552411405241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258735234201 + ... + 258735234206.

It is an arithmetic number, because the mean of its divisors is an integer number (517470468408).

Almost surely, 2^{1552411405221} is an apocalyptic number.

It is an amenable number.

1552411405221 is a deficient number, since it is larger than the sum of its proper divisors (517470468411).

1552411405221 is an equidigital number, since it uses as much as digits as its factorization.

1552411405221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517470468410.

The product of its (nonzero) digits is 16000, while the sum is 33.

Adding to 1552411405221 its reverse (1225041142551), we get a palindrome (2777452547772).

The spelling of 1552411405221 in words is "one trillion, five hundred fifty-two billion, four hundred eleven million, four hundred five thousand, two hundred twenty-one".