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BaseRepresentation
bin1101101101101001
32212001100
431231221
53244134
61112013
7322521
oct155551
985040
1056169
1139223
1228609
131c749
1416681
1511999
hexdb69

56169 has 9 divisors (see below), whose sum is σ = 82173. Its totient is φ = 36972.

The previous prime is 56167. The next prime is 56171. The reversal of 56169 is 96165.

It can be divided in two parts, 5616 and 9, that added together give a square (5625 = 752).

56169 = T236 + T237.

The square root of 56169 is 237.

It is a perfect power (a square), and thus also a powerful number.

56169 is nontrivially palindromic in base 8.

It is an interprime number because it is at equal distance from previous prime (56167) and next prime (56171).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 56169 - 21 = 56167 is a prime.

It is a super-2 number, since 2×561692 = 6309913122, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (56167) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 672 + ... + 750.

256169 is an apocalyptic number.

56169 is the 237-th square number.

56169 is the 119-th centered octagonal number.

It is an amenable number.

56169 is a deficient number, since it is larger than the sum of its proper divisors (26004).

56169 is an equidigital number, since it uses as much as digits as its factorization.

56169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 82 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The cubic root of 56169 is about 38.2970713583.

The spelling of 56169 in words is "fifty-six thousand, one hundred sixty-nine".

Divisors: 1 3 9 79 237 711 6241 18723 56169