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57401309506 = 2171688273809
BaseRepresentation
bin110101011101011000…
…100111100101000010
312111011101200122120011
4311131120213211002
51420024213401011
642211513135134
74101313036402
oct653530474502
9174141618504
1057401309506
11223865a7472
12b15b6ba4aa
13554a2552c8
142ac76b2802
15175e530621
hexd5d627942

57401309506 has 8 divisors (see below), whose sum is σ = 91166785740. Its totient is φ = 27012380928.

The previous prime is 57401309503. The next prime is 57401309527. The reversal of 57401309506 is 60590310475.

57401309506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45407774281 + 11993535225 = 213091^2 + 109515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57401309503) 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, 844136871 + ... + 844136938.

Almost surely, 257401309506 is an apocalyptic number.

57401309506 is a deficient number, since it is larger than the sum of its proper divisors (33765476234).

57401309506 is a wasteful number, since it uses less digits than its factorization.

57401309506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688273828.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 57401309506 in words is "fifty-seven billion, four hundred one million, three hundred nine thousand, five hundred six".

Divisors: 1 2 17 34 1688273809 3376547618 28700654753 57401309506