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57442361551 = 2391009323813
BaseRepresentation
bin110101011111110101…
…001110000011001111
312111021020221022101021
4311133311032003033
51420120221032201
642215541055011
74102322005561
oct653765160317
9174236838337
1057442361551
11223a7796483
12b1713b7467
1355558c9963
142accd1b331
151762e3dea1
hexd5fd4e0cf

57442361551 has 8 divisors (see below), whose sum is σ = 57690843840. Its totient is φ = 57193947552.

The previous prime is 57442361549. The next prime is 57442361573. The reversal of 57442361551 is 15516324475.

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 57442361551 - 21 = 57442361549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57442361498 and 57442361507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57442371551) 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, 2400321 + ... + 2424133.

It is an arithmetic number, because the mean of its divisors is an integer number (7211355480).

Almost surely, 257442361551 is an apocalyptic number.

57442361551 is a deficient number, since it is larger than the sum of its proper divisors (248482289).

57442361551 is a wasteful number, since it uses less digits than its factorization.

57442361551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34145.

The product of its digits is 504000, while the sum is 43.

The spelling of 57442361551 in words is "fifty-seven billion, four hundred forty-two million, three hundred sixty-one thousand, five hundred fifty-one".

Divisors: 1 239 10093 23813 2412227 5691307 240344609 57442361551