1552255400221 has 8 divisors (see below), whose sum is σ = 1654207421184. Its totient is φ = 1453175267280.

The previous prime is 1552255400219. The next prime is 1552255400231. The reversal of 1552255400221 is 1220045522551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1552255400221 - 2¹ = 1552255400219 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 (1552255400231) 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, 717970890 + ... + 717973051.

It is an arithmetic number, because the mean of its divisors is an integer number (206775927648).

Almost surely, 2^{1552255400221} is an apocalyptic number.

It is an amenable number.

1552255400221 is a deficient number, since it is larger than the sum of its proper divisors (101952020963).

1552255400221 is a wasteful number, since it uses less digits than its factorization.

1552255400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435944011.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 1552255400221 in words is "one trillion, five hundred fifty-two billion, two hundred fifty-five million, four hundred thousand, two hundred twenty-one".