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68552131 = 972392957
BaseRepresentation
bin1000001011000…
…00010111000011
311202222210211211
410011200113003
5120022132011
610445150551
71461453304
oct405402703
9152883754
1068552131
113577225a
121ab5b457
13112827bb
1491667ab
156041b21
hex41605c3

68552131 has 8 divisors (see below), whose sum is σ = 69572160. Its totient is φ = 67538688.

The previous prime is 68552119. The next prime is 68552137. The reversal of 68552131 is 13125586.

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 68552131 - 213 = 68543939 is a prime.

It is a super-2 number, since 2×685521312 = 9398789329282322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68552093 and 68552102.

It is not an unprimeable number, because it can be changed into a prime (68552137) 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, 21705 + ... + 24661.

It is an arithmetic number, because the mean of its divisors is an integer number (8696520).

Almost surely, 268552131 is an apocalyptic number.

68552131 is a deficient number, since it is larger than the sum of its proper divisors (1020029).

68552131 is a wasteful number, since it uses less digits than its factorization.

68552131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293.

The product of its digits is 7200, while the sum is 31.

The square root of 68552131 is about 8279.6214285437. The cubic root of 68552131 is about 409.2672436391.

The spelling of 68552131 in words is "sixty-eight million, five hundred fifty-two thousand, one hundred thirty-one".

Divisors: 1 97 239 2957 23183 286829 706723 68552131