1056657161 has 8 divisors (see below), whose sum is σ = 1209361344. Its totient is φ = 904391280.

The previous prime is 1056657157. The next prime is 1056657187. The reversal of 1056657161 is 1617566501.

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 1056657161 - 2² = 1056657157 is a prime.

It is a super-2 number, since 2×1056657161² = 2233048711785159842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1056657101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104390 + ... + 114063.

It is an arithmetic number, because the mean of its divisors is an integer number (151170168).

Almost surely, 2^1056657161 is an apocalyptic number.

It is an amenable number.

1056657161 is a deficient number, since it is larger than the sum of its proper divisors (152704183).

1056657161 is an equidigital number, since it uses as much as digits as its factorization.

1056657161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219151.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1056657161 is about 32506.2634118411. The cubic root of 1056657161 is about 1018.5398693610.

The spelling of 1056657161 in words is "one billion, fifty-six million, six hundred fifty-seven thousand, one hundred sixty-one".