1055533381 has 8 divisors (see below), whose sum is σ = 1208494080. Its totient is φ = 903115248.

The previous prime is 1055533363. The next prime is 1055533393. The reversal of 1055533381 is 1833355501.

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

It is not a de Polignac number, because 1055533381 - 2⁹ = 1055532869 is a prime.

It is a super-2 number, since 2×1055533381² = 2228301436810582322, which 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 (1055533301) 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, 131461 + ... + 139258.

It is an arithmetic number, because the mean of its divisors is an integer number (151061760).

Almost surely, 2^1055533381 is an apocalyptic number.

It is an amenable number.

1055533381 is a deficient number, since it is larger than the sum of its proper divisors (152960699).

1055533381 is an equidigital number, since it uses as much as digits as its factorization.

1055533381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271283.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 1055533381 is about 32488.9732216948. The cubic root of 1055533381 is about 1018.1786608279.

Adding to 1055533381 its reverse (1833355501), we get a palindrome (2888888882).

The spelling of 1055533381 in words is "one billion, fifty-five million, five hundred thirty-three thousand, three hundred eighty-one".