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57050813 = 1272112129
BaseRepresentation
bin1101100110100…
…0011010111101
310222100111000002
43121220122331
5104101111223
65354444045
71261631621
oct331503275
9128314002
1057050813
112a227136
1217133625
13ba867a1
147811181
15501de28
hex36686bd

57050813 has 8 divisors (see below), whose sum is σ = 57799680. Its totient is φ = 56306880.

The previous prime is 57050789. The next prime is 57050821. The reversal of 57050813 is 31805075.

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 57050813 - 214 = 57034429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57052813) 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, 25733 + ... + 27861.

It is an arithmetic number, because the mean of its divisors is an integer number (7224960).

Almost surely, 257050813 is an apocalyptic number.

It is an amenable number.

57050813 is a deficient number, since it is larger than the sum of its proper divisors (748867).

57050813 is a wasteful number, since it uses less digits than its factorization.

57050813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 57050813 is about 7553.1988587618. The cubic root of 57050813 is about 384.9644381613.

Adding to 57050813 its reverse (31805075), we get a palindrome (88855888).

The spelling of 57050813 in words is "fifty-seven million, fifty thousand, eight hundred thirteen".

Divisors: 1 127 211 2129 26797 270383 449219 57050813