1055557553381 has 8 divisors (see below), whose sum is σ = 1069894396800. Its totient is φ = 1041275746720.

The previous prime is 1055557553377. The next prime is 1055557553399. The reversal of 1055557553381 is 1833557555501.

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 1055557553381 - 2² = 1055557553377 is a prime.

It is a super-2 number, since 2×1055557553381² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055557553371) 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, 13720571 + ... + 13797288.

It is an arithmetic number, because the mean of its divisors is an integer number (133736799600).

Almost surely, 2^{1055557553381} is an apocalyptic number.

It is an amenable number.

1055557553381 is a deficient number, since it is larger than the sum of its proper divisors (14336843419).

1055557553381 is an equidigital number, since it uses as much as digits as its factorization.

1055557553381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518379.

The product of its (nonzero) digits is 7875000, while the sum is 53.

The spelling of 1055557553381 in words is "one trillion, fifty-five billion, five hundred fifty-seven million, five hundred fifty-three thousand, three hundred eighty-one".