1055681061 has 4 divisors (see below), whose sum is σ = 1407574752. Its totient is φ = 703787372.

The previous prime is 1055681047. The next prime is 1055681111. The reversal of 1055681061 is 1601865501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1601865501 = 3 ⋅533955167.

It is a cyclic number.

It is not a de Polignac number, because 1055681061 - 2¹³ = 1055672869 is a prime.

It is a super-2 number, since 2×1055681061² = 2228925005108171442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055683061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175946841 + ... + 175946846.

It is an arithmetic number, because the mean of its divisors is an integer number (351893688).

Almost surely, 2^1055681061 is an apocalyptic number.

It is an amenable number.

1055681061 is a deficient number, since it is larger than the sum of its proper divisors (351893691).

1055681061 is an equidigital number, since it uses as much as digits as its factorization.

1055681061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351893690.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 1055681061 is about 32491.2459133226. The cubic root of 1055681061 is about 1018.2261431768.

The spelling of 1055681061 in words is "one billion, fifty-five million, six hundred eighty-one thousand, sixty-one".