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61083081 = 3219357211
BaseRepresentation
bin1110100100000…
…0110111001001
311020221100020100
43221000313021
5111114124311
610021120013
71341124533
oct351006711
9136840210
1061083081
1131530694
1218559009
13c868c47
148180853
155568a56
hex3a40dc9

61083081 has 12 divisors (see below), whose sum is σ = 92875120. Its totient is φ = 38578680.

The previous prime is 61083067. The next prime is 61083097. The reversal of 61083081 is 18038016.

It is not a de Polignac number, because 61083081 - 25 = 61083049 is a prime.

It is a super-2 number, since 2×610830812 = 7462285568905122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61083031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178435 + ... + 178776.

Almost surely, 261083081 is an apocalyptic number.

It is an amenable number.

61083081 is a deficient number, since it is larger than the sum of its proper divisors (31792039).

61083081 is a wasteful number, since it uses less digits than its factorization.

61083081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357236 (or 357233 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 61083081 is about 7815.5665821487. The cubic root of 61083081 is about 393.8283520570.

The spelling of 61083081 in words is "sixty-one million, eighty-three thousand, eighty-one".

Divisors: 1 3 9 19 57 171 357211 1071633 3214899 6787009 20361027 61083081