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2055810731 = 131725137061
BaseRepresentation
bin111101010001001…
…0010111010101011
312022021101000011012
41322202102322223
513202241420411
6535555054135
7101642050202
oct17242227253
95267330135
102055810731
119654a7037
124945a134b
13269bb8570
14157066239
15c073918b
hex7a892eab

2055810731 has 16 divisors (see below), whose sum is σ = 2353585248. Its totient is φ = 1778880000.

The previous prime is 2055810721. The next prime is 2055810739. The reversal of 2055810731 is 1370185502.

It is not a de Polignac number, because 2055810731 - 230 = 982068907 is a prime.

It is a super-2 number, since 2×20558107312 = 8452715523389508722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2055810739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36941 + ... + 74001.

It is an arithmetic number, because the mean of its divisors is an integer number (147099078).

Almost surely, 22055810731 is an apocalyptic number.

2055810731 is a deficient number, since it is larger than the sum of its proper divisors (297774517).

2055810731 is a wasteful number, since it uses less digits than its factorization.

2055810731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37342.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 2055810731 is about 45341.0490725568. The cubic root of 2055810731 is about 1271.5332157473.

The spelling of 2055810731 in words is "two billion, fifty-five million, eight hundred ten thousand, seven hundred thirty-one".

Divisors: 1 13 17 221 251 3263 4267 37061 55471 481793 630037 8190481 9302311 120930043 158139287 2055810731