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56623801 = 1337117721
BaseRepresentation
bin1101100000000…
…0001010111001
310221112210020211
43120000022321
5103443430201
65341351121
71255202653
oct330001271
9127483224
1056623801
1129a65333
1216b684a1
13b967310
14773d6d3
154e87651
hex36002b9

56623801 has 8 divisors (see below), whose sum is σ = 62628104. Its totient is φ = 50855040.

The previous prime is 56623789. The next prime is 56623823. The reversal of 56623801 is 10832665.

It can be written as a sum of positive squares in 4 ways, for example, as 9000000 + 47623801 = 3000^2 + 6901^2 .

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 56623801 - 29 = 56623289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56623841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58380 + ... + 59341.

It is an arithmetic number, because the mean of its divisors is an integer number (7828513).

Almost surely, 256623801 is an apocalyptic number.

It is an amenable number.

56623801 is a deficient number, since it is larger than the sum of its proper divisors (6004303).

56623801 is a wasteful number, since it uses less digits than its factorization.

56623801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117771.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 56623801 is about 7524.8788030107. The cubic root of 56623801 is about 384.0015756048.

The spelling of 56623801 in words is "fifty-six million, six hundred twenty-three thousand, eight hundred one".

Divisors: 1 13 37 481 117721 1530373 4355677 56623801