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56032069 = 101355313
BaseRepresentation
bin1101010110111…
…1101101000101
310220102201112211
43111233231011
5103321011234
65320543421
71250156542
oct325575505
9126381484
1056032069
11296a07a5
1216921b71
13b7bab92
147627bc9
154dbc164
hex356fb45

56032069 has 4 divisors (see below), whose sum is σ = 56088396. Its totient is φ = 55975744.

The previous prime is 56032063. The next prime is 56032079. The reversal of 56032069 is 96023065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96023065 = 519204613.

It can be written as a sum of positive squares in 2 ways, for example, as 21669025 + 34363044 = 4655^2 + 5862^2 .

It is a cyclic number.

It is not a de Polignac number, because 56032069 - 215 = 55999301 is a prime.

It is a super-2 number, since 2×560320692 = 6279185512841522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56032069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56032063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26644 + ... + 28669.

It is an arithmetic number, because the mean of its divisors is an integer number (14022099).

Almost surely, 256032069 is an apocalyptic number.

It is an amenable number.

56032069 is a deficient number, since it is larger than the sum of its proper divisors (56327).

56032069 is a wasteful number, since it uses less digits than its factorization.

56032069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56326.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 56032069 is about 7485.4571670674. The cubic root of 56032069 is about 382.6592533208.

The spelling of 56032069 in words is "fifty-six million, thirty-two thousand, sixty-nine".

Divisors: 1 1013 55313 56032069