1055432381 has 2 divisors, whose sum is σ = 1055432382. Its totient is φ = 1055432380.

The previous prime is 1055432359. The next prime is 1055432383. The reversal of 1055432381 is 1832345501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992880100 + 62552281 = 31510^2 + 7909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055432381 - 2¹⁴ = 1055415997 is a prime.

It is a super-2 number, since 2×1055432381² = 2227875021726658322, which contains 22 as substring.

Together with 1055432383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055432383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527716190 + 527716191.

It is an arithmetic number, because the mean of its divisors is an integer number (527716191).

Almost surely, 2^1055432381 is an apocalyptic number.

It is an amenable number.

1055432381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055432381 is an equidigital number, since it uses as much as digits as its factorization.

1055432381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1055432381 is about 32487.4188109797. The cubic root of 1055432381 is about 1018.1461845694.

Adding to 1055432381 its reverse (1832345501), we get a palindrome (2887777882).

The spelling of 1055432381 in words is "one billion, fifty-five million, four hundred thirty-two thousand, three hundred eighty-one".