1552354050221 has 8 divisors (see below), whose sum is σ = 1671904129560. Its totient is φ = 1432823717952.

The previous prime is 1552354050217. The next prime is 1552354050259. The reversal of 1552354050221 is 1220504532551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 139550809225 + 1412803240996 = 373565^2 + 1188614^2 .

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 1552354050221 - 2² = 1552354050217 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 (1552354050271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4773290 + ... + 5088123.

It is an arithmetic number, because the mean of its divisors is an integer number (208988016195).

Almost surely, 2^{1552354050221} is an apocalyptic number.

It is an amenable number.

1552354050221 is a deficient number, since it is larger than the sum of its proper divisors (119550079339).

1552354050221 is a wasteful number, since it uses less digits than its factorization.

1552354050221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9873535.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 1552354050221 its reverse (1220504532551), we get a palindrome (2772858582772).

The spelling of 1552354050221 in words is "one trillion, five hundred fifty-two billion, three hundred fifty-four million, fifty thousand, two hundred twenty-one".